[go: up one dir, main page]

CN104387235A - Method for synthesizing prenol employing selective hydrogenation of 3-methylcrotonaldehyde - Google Patents

Method for synthesizing prenol employing selective hydrogenation of 3-methylcrotonaldehyde Download PDF

Info

Publication number
CN104387235A
CN104387235A CN201410671165.1A CN201410671165A CN104387235A CN 104387235 A CN104387235 A CN 104387235A CN 201410671165 A CN201410671165 A CN 201410671165A CN 104387235 A CN104387235 A CN 104387235A
Authority
CN
China
Prior art keywords
olefine aldehydr
water
prenol
isoamyl olefine
selective hydrogenation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410671165.1A
Other languages
Chinese (zh)
Other versions
CN104387235B (en
Inventor
赵文乐
马啸
马书召
张相如
周剑平
陈为超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANDONG XINHECHENG PHARMACEUTICAL CO Ltd
Original Assignee
SHANDONG XINHECHENG PHARMACEUTICAL CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SHANDONG XINHECHENG PHARMACEUTICAL CO Ltd filed Critical SHANDONG XINHECHENG PHARMACEUTICAL CO Ltd
Priority to CN201410671165.1A priority Critical patent/CN104387235B/en
Publication of CN104387235A publication Critical patent/CN104387235A/en
Application granted granted Critical
Publication of CN104387235B publication Critical patent/CN104387235B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/132Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
    • C07C29/136Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
    • C07C29/14Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group
    • C07C29/141Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of a —CHO group with hydrogen or hydrogen-containing gases

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention discloses a method for synthesizing prenol employing selective hydrogenation of 3-methylcrotonaldehyde. The method comprises the following steps: feeding, nitrogen and hydrogen substitution, hydrogenation reaction, and separation. The used raw materials comprise 1 part of 3-methylcrotonaldehyde, 0.1-10 parts of water and 0.02-0.2 part of a catalyst; and the used catalyst is a water-soluble complex which is formed by a water-soluble salt of the group VIII metal and a water-soluble ligand. The 3-methylcrotonaldehyde conversion ratio and the selectivity of prenol of the synthetic reaction are high; a water phase of the catalyst can be applied repeatedly for over 20 times; the unit consumption of the catalyst is low; the production cost is greatly reduced; and the method is suitable for industrial production.

Description

A kind of method of isoamyl olefine aldehydr selective hydrogenation synthesis prenol
Technical field
The present invention relates to the synthetic method of a kind of medicine, spices and pesticide intermediate prenol, specifically a kind of method of isoamyl olefine aldehydr selective hydrogenation synthesis prenol.
Background technology
Prenol (3-methyl-2 butenol), a kind of important medicine, spices and pesticide intermediate, can be used for producing citral, different vegetable alcohol, DV chrysanthemumic acid methyl esters, vitamin-E, vitamin A, carotenoid intermediate etc., also can be used for other organic syntheses.
The synthetic method of current prenol mainly contains following several:
1, iso-butylene method: patent US4028424 describes with iso-butylene and formaldehyde for raw material obtains prenol through prins reaction, but this reaction preference is poor, and the selectivity of prenol is about 5%, generates the 3-methyl-3-butenol of 80 ~ 90% simultaneously;
Patent WO2008037693 describes with iso-butylene and formaldehyde as raw material obtains 3-methyl-3-butenol through condensation reaction, again the isomerization on heterogeneous noble metal catalyst of 3-methyl-3-butenol is generated 3-methyl-2 butenol, this catalyzer is made up of Pd, Se and Te, and this reaction has the excessive hydrogenation product primary isoamyl alcohol of 2.5% to generate in addition;
Patent US4219683 describes and 3-methyl-3-butenol isomery under palladium catalyst and hydrogen exist is converted into prenol, and transformation efficiency is 39 ~ 54%, selectivity 82 ~ 99%.The shortcoming of this operational path is, iso-butylene and formaldehyde reaction need High Temperature High Pressure, severe reaction conditions, and in addition, the isomerization reaction low conversion rate of 3-methyl-3-butenol, separating difficulty is large.
2, methyl butenol isomerate process: under alkaline condition, acetone and acetylene ethynylation, generate methylbutynol, then obtain methyl butenol with lindlar catalyst hydrogenation, obtain prenol in isomerization.
Describe with 2-methyl-3-butene-2 alcohol (methyl butenol) for raw material in patent US3925485 example, with positive vanadic acid tetrahydrochysene virtue camphor tree ester for catalyzer, 150 DEG C of reaction 7h, obtain the transformation efficiency 25.6% of prenol, yield can to 83%; One or more describing in use rhenium catalyst, tungsten catalyst and vanadium catalyst of patent CN101381283A carry out the isomerization reaction of methyl butenol, temperature 130 ~ 150 DEG C, under pressure 0.2 ~ 0.3MPa, can obtain prenol continuously, yield is 86 ~ 93%.The shortcoming of above-mentioned two patent techniques is isomerization reaction is balanced reaction, low conversion rate, and separating difficulty is large, and the catalyst preparing difficulty used, price is higher.
3, isoamyl olefine aldehydr hydrogenation method: isoamyl olefine aldehydr is carried out selective hydrogenation and obtains prenol.The people such as Tomoo (J Org Chem 1998,63:2378-2381) use α, and beta-unsaturated carbonyl compound has the Rh of high catalytic activity 6(CO) 16be catalyzer with amine substance, with formic acid and Virahol for hydrogen source, carry out hydrogenation reaction to isoamyl olefine aldehydr, transformation efficiency can reach 92%, prenol selectivity 96%, and primary isoamyl alcohol selectivity reaches 4%.Patent US4929776 adopts RuH 2(PPh 3) be catalyzer, isopropyl alcohol and water or toluene make solvent, and isoamyl olefine aldehydr is at 35 ~ 50 DEG C, and hydrogenation under 2 ~ 3MPa, transformation efficiency can reach 100%, and prenol selectivity reaches 90%.
Patent CN1258506C and CN1323059C describes the method using Ru doped F e loaded catalyst and Pt/ZnO to carry out the selective hydrogenation of olefinic beta-unsaturated carbonyl compounds to prepare corresponding unsaturated alcohol, wherein the selectivity of unsaturated alcohol reaches more than 90%, saturated alcohol selectivity 4 ~ 6%, but the example all not describing isoamyl olefine aldehydr hydrogenation.
Isoamyl olefine aldehydr Hydrogenation is to have C=C and C=O key in isoamyl olefine aldehydr molecule for its technological difficulties of prenol simultaneously, because C=O bond energy is greater than C=C bond energy, and the two has conjugation, make reaction will on C=O key hydrogenation and not destroy C=C key more difficult, inevitably there is primary isoamyl alcohol (saturated alcohol) product in hydrogenation process.
Summary of the invention
Technical problem to be solved by this invention is the deficiency overcoming the existence of above-mentioned prior art, there is provided a kind of isoamyl olefine aldehydr in water-organic biphasic, carry out the method for selective hydrogenation synthesis prenol, realize following goal of the invention: the selectivity of isoamyl olefine aldehydr transformation efficiency and prenol is high; Product is easily separated with catalyzer, easy and simple to handle, energy-saving and cost-reducing; Catalyzer aqueous phase can realize the recycled of more than 20 times, and catalyst consumption is low, significantly reduces production cost, is applicable to suitability for industrialized production.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A method for isoamyl olefine aldehydr selective hydrogenation synthesis prenol, comprises the following steps: feed intake; Nitrogen, hydrogen exchange; Hydrogenation reaction; Be separated.
Below the further improvement to technique scheme:
In described material addition step, the raw material of input is: isoamyl olefine aldehydr, water and catalyzer, wherein the water soluble complex that formed of the catalyzer water-soluble salt that is group VIII metal and water soluble ligand.
The water-soluble salt of described group VIII metal is one or more in ruthenium acetate, ruthenium chloride, nitric acid ruthenium, rhodium sulfate, rhodium chloride, rhodium nitrate, acid chloride, Palladous chloride, Palladous nitrate, iridium acetate, iridium chloride, nitric acid iridium.
Described water soluble ligand is water-soluble phosphine ligand and water-soluble imine ligand.
The water-soluble salt of described group VIII metal and the mass ratio of water soluble ligand are 0.001 ~ 0.01:1.
The mass ratio dropping into raw material is: 1 part of isoamyl olefine aldehydr, 0.1 ~ 10 part of water and 0.02 ~ 0.2 part of catalyzer.
In described hydrogenation reaction step, hydrogen pressure 0.5 ~ 15.0MPa, temperature of reaction 30 ~ 150 DEG C.
In described hydrogenation reaction step, under the condition of mixing speed 200 ~ 1000rpm, compressive reaction 3 ~ 30h.
In described hydrogenation reaction step, until isoamyl olefine aldehydr transformation efficiency > 98%, stop this reactions steps.
Adopt the method, transformation efficiency >=98% of isoamyl olefine aldehydr, prenol selectivity >=99%, the selectivity < 1% of excessive hydrogenation product primary isoamyl alcohol.
The present invention compared with prior art, has the following advantages:
1. use water-organic biphasic reaction, react complete two phase stratification, directly can obtain product, be easy to being separated of product and catalyzer, easy and simple to handle, energy-saving and cost-reducing;
2. the water-soluble group VIII metal complex catalysis system used, the selectivity of isoamyl olefine aldehydr transformation efficiency and prenol is higher, and transformation efficiency reaches more than 98%, and prenol selectivity reaches more than 99%, and the selectivity of excessive hydrogenation product primary isoamyl alcohol is less than 1%;
3. catalyzer aqueous phase can realize the recycled of more than 20 times, and catalyst consumption is low, significantly reduces production cost, is applicable to suitability for industrialized production.
Below in conjunction with embodiment, technical scheme of the present invention is described further.
Embodiment
A method for isoamyl olefine aldehydr selective hydrogenation synthesis prenol, comprises the following steps:
A, to feed intake
By 1 part of isoamyl olefine aldehydr, 0.1 ~ 10 part of water, and the water soluble complex catalyzer that the water-soluble salt of 0.02 ~ 0.2 part of group VIII metal and water soluble ligand are formed joins in autoclave.
B, nitrogen, hydrogen exchange
Nitrogen replacement three times, hydrogen exchange three times.
C, hydrogenation reaction
Then at hydrogen pressure 0.5 ~ 15.0MPa, temperature of reaction 30 ~ 150 DEG C, under the condition of mixing speed 200 ~ 1000rpm, compressive reaction 3 ~ 30h, until isoamyl olefine aldehydr transformation efficiency > 98%.
D, separation
After reaction terminates, stratification, the aqueous phase containing catalyzer continues cover and uses lower batch reaction, and organic phase is prenol.
Embodiment 1
6g ruthenium chloride and three-(to phenoxy group-Soxylat A 25-7)-phosphine complex catalyst, 500g water are joined in the 2L autoclave with magnetic agitation and temperature controller, then add 200g isoamyl olefine aldehydr.Ruthenium chloride and three in complex catalyst-(to phenoxy group-Soxylat A 25-7)-phosphine mass ratio is 0.009:1.
With nitrogen replacement three times, rear hydrogen exchange three times.
Be heated to 150 DEG C, pressurized with hydrogen stirs to 3.0MPa, 700rpm, and react 3 hours, sampling analysis isoamyl olefine aldehydr transformation efficiency is greater than 99%.
With water cooling, extrude reaction solution, stratification, the aqueous phase containing catalyzer can continue cover and use lower batch reaction, and organic phase is prenol.
Through gas chromatographic analysis, the transformation efficiency of isoamyl olefine aldehydr is 99.98%, prenol selectivity 99.10%.
Embodiment 2
25g rhodium nitrate and triphenylphosphine sodium sulfonate complex catalyst, 200g water are joined in the 2L autoclave with magnetic agitation and temperature controller, then add 300g isoamyl olefine aldehydr.The mass ratio of complex catalyst rhodium nitrate and triphenylphosphine sodium sulfonate is 0.001:1.
With nitrogen replacement three times, rear hydrogen exchange three times.
Be heated to 30 DEG C, pressurized with hydrogen stirs to 5.0MPa, 700rpm, and react 28 hours, sampling analysis isoamyl olefine aldehydr transformation efficiency is greater than 98%.
With water cooling, extrude reaction solution, stratification, the aqueous phase containing catalyzer can continue cover and use lower batch reaction, and organic phase is prenol.
Through gas chromatographic analysis, the transformation efficiency of isoamyl olefine aldehydr is 98.15%, prenol selectivity 99.20%.
Embodiment 3
25g rhodium nitrate and three-(to phenoxy group-Soxylat A 25-7)-phosphine complex catalyst, 800g water are joined in the 2L autoclave with magnetic agitation and temperature controller, then add 100g isoamyl olefine aldehydr.The mass ratio of rhodium nitrate and three in complex catalyst-(to phenoxy group-Soxylat A 25-7)-phosphine is 0.01:1.
With nitrogen replacement three times, rear hydrogen exchange three times.
Be heated to 100 DEG C, pressurized with hydrogen stirs to 0.5MPa, 500rpm, and react 18.5 hours, sampling analysis isoamyl olefine aldehydr transformation efficiency is greater than 98%.
With water cooling, extrude reaction solution, stratification, the aqueous phase containing catalyzer can continue cover and use lower batch reaction, and organic phase is prenol.
Through gas chromatographic analysis, the transformation efficiency of isoamyl olefine aldehydr is 98.05%, prenol selectivity 99.40%.
Embodiment 4
20g palladous sulfate and three-(4-methoxyl group-3-sodium sulfonate phenyl) phosphine complex catalyst, 1000g water are joined in the 2L autoclave with magnetic agitation and temperature controller, then add 250g isoamyl olefine aldehydr.The mass ratio of Palladous chloride and three in complex catalyst-(4-methoxyl group-3-sodium sulfonate phenyl) phosphine is 0.006:1.
With nitrogen replacement three times, rear hydrogen exchange three times.
Be heated to 130 DEG C, pressurized with hydrogen stirs to 2.0MPa, 1000rpm, and react 20 hours, sampling analysis isoamyl olefine aldehydr transformation efficiency is greater than 99%.
With water cooling, extrude reaction solution, stratification, the aqueous phase containing catalyzer can continue cover and use lower batch reaction, and organic phase is prenol.
Through gas chromatographic analysis, the transformation efficiency of isoamyl olefine aldehydr is 99.05%, prenol selectivity 99.01%.
Embodiment 5
2g rhodium chloride and three-(2-methoxyl group-3-sodium sulfonate phenyl) phosphine, 1000g water are joined in the 2L autoclave with magnetic agitation and temperature controller, then add 100g isoamyl olefine aldehydr.The mass ratio of rhodium sulfate and three in complex catalyst-(2-methoxyl group-3-sodium sulfonate phenyl) phosphine is 0.001:1.
With nitrogen replacement three times, rear hydrogen exchange three times.
Be heated to 130 DEG C, pressurized with hydrogen stirs to 10.0MPa, 1000rpm, reacts 19 hours.Sampling analysis isoamyl olefine aldehydr transformation efficiency is greater than 90%.
With water cooling, extrude reaction solution, stratification, the aqueous phase containing catalyzer can continue cover and use lower batch reaction, and organic phase is prenol.
Through gas chromatographic analysis, the transformation efficiency of isoamyl olefine aldehydr is 98.11%, prenol selectivity 99.37%.
Embodiment 6
20g Palladous chloride and 5-[1-(2,6-di-isopropyl phenyl imido)-ethyl]-2-furane sulfonic acid triethyl ammonium complex catalyst, 600g water are joined in the 2L autoclave with magnetic agitation and temperature controller, then add 300g isoamyl olefine aldehydr.In complex catalyst, the mass ratio of Palladous chloride and 5-[1-(2,6-di-isopropyl phenyl imido)-ethyl]-2-furane sulfonic acid triethyl ammonium is 0.008:1.
With nitrogen replacement three times, rear hydrogen exchange three times.
Be heated to 100 DEG C, pressurized with hydrogen stirs to 2.0MPa, 1000rpm, reacts 9 hours.Sampling analysis isoamyl olefine aldehydr transformation efficiency is greater than 98%,
With water cooling, extrude reaction solution, stratification, the aqueous phase containing catalyzer can continue cover and use lower batch reaction, and organic phase is prenol.
Through gas chromatographic analysis, the transformation efficiency of isoamyl olefine aldehydr is 98.35%, prenol selectivity 99.01%.
Embodiment 7
10g iridium chloride and triphenylphosphine sodium sulfonate complex catalyst, 600g water are joined in the 2L autoclave with magnetic agitation and temperature controller, then add 300g isoamyl olefine aldehydr.In complex catalyst, the mass ratio of iridium chloride and triphenylphosphine sodium sulfonate is 0.004:1.
With nitrogen replacement three times, rear hydrogen exchange three times.
Be heated to 70 DEG C, pressurized with hydrogen stirs to 2.5MPa, 1000rpm, reacts 10 hours.Sampling analysis isoamyl olefine aldehydr transformation efficiency is greater than 98%.
With water cooling, extrude reaction solution, stratification, the aqueous phase containing catalyzer can continue cover and use lower batch reaction, and organic phase is prenol.
Through gas chromatographic analysis, the transformation efficiency of isoamyl olefine aldehydr is 99.93%, prenol selectivity 99.22%.
Applied mechanically by aqueous phase containing catalyzer in embodiment 7, its experimental result is as following table:
As seen from the above table, catalyst recovery apply mechanically 18 post-reacted selectivity and transformation efficiency still higher.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.

Claims (10)

1. a method for isoamyl olefine aldehydr selective hydrogenation synthesis prenol, is characterized in that: comprise the following steps: feed intake; Nitrogen, hydrogen exchange; Hydrogenation reaction; Be separated.
2. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 1, it is characterized in that: in described material addition step, the raw material dropped into is: isoamyl olefine aldehydr, water and catalyzer, wherein the water soluble complex that formed of the catalyzer water-soluble salt that is group VIII metal and water soluble ligand.
3. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 2, is characterized in that: the water-soluble salt of described group VIII metal is one or more in ruthenium acetate, ruthenium chloride, nitric acid ruthenium, rhodium sulfate, rhodium chloride, rhodium nitrate, acid chloride, Palladous chloride, Palladous nitrate, iridium acetate, iridium chloride, nitric acid iridium.
4. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 2, is characterized in that: described water soluble ligand is water-soluble phosphine ligand and water-soluble imine ligand.
5. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 2, is characterized in that: the water-soluble salt of described group VIII metal and the mass ratio of water soluble ligand are 0.001 ~ 0.01:1.
6. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 2, is characterized in that: the mass ratio dropping into raw material is: 1 part of isoamyl olefine aldehydr, 0.1 ~ 10 part of water and 0.02 ~ 0.2 part of catalyzer.
7. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 1, is characterized in that: in described hydrogenation reaction step, hydrogen pressure 0.5 ~ 15.0MPa, temperature of reaction 30 ~ 150 DEG C.
8. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 1, is characterized in that: in described hydrogenation reaction step, under the condition of mixing speed 200 ~ 1000rpm, compressive reaction 3 ~ 30h.
9. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 1, is characterized in that: in described hydrogenation reaction step, until isoamyl olefine aldehydr transformation efficiency > 98%, stops this reactions steps.
10. the method for a kind of isoamyl olefine aldehydr selective hydrogenation synthesis prenol as claimed in claim 1, it is characterized in that: adopt the method, transformation efficiency >=98% of isoamyl olefine aldehydr, prenol selectivity >=99%, the selectivity < 1% of excessive hydrogenation product primary isoamyl alcohol.
CN201410671165.1A 2014-11-21 2014-11-21 Method for synthesizing prenol employing selective hydrogenation of 3-methylcrotonaldehyde Active CN104387235B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410671165.1A CN104387235B (en) 2014-11-21 2014-11-21 Method for synthesizing prenol employing selective hydrogenation of 3-methylcrotonaldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410671165.1A CN104387235B (en) 2014-11-21 2014-11-21 Method for synthesizing prenol employing selective hydrogenation of 3-methylcrotonaldehyde

Publications (2)

Publication Number Publication Date
CN104387235A true CN104387235A (en) 2015-03-04
CN104387235B CN104387235B (en) 2017-02-22

Family

ID=52605214

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410671165.1A Active CN104387235B (en) 2014-11-21 2014-11-21 Method for synthesizing prenol employing selective hydrogenation of 3-methylcrotonaldehyde

Country Status (1)

Country Link
CN (1) CN104387235B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107089900A (en) * 2017-04-28 2017-08-25 山东新和成药业有限公司 A kind of preparation method of β benzyl carbinols
CN110643556A (en) * 2019-08-23 2020-01-03 浙江工业大学 A recombinant genetically engineered bacterium co-expressing alkenaldehyde reductase and glucose dehydrogenase and its application
CN114262257A (en) * 2020-09-16 2022-04-01 万华化学集团股份有限公司 Method for recovering isoamyl alcohol through hydrogenation of citral process waste liquid

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219677A (en) * 1976-07-27 1980-08-26 Rhone-Poulenc Industries Telomerization process
US4925990A (en) * 1987-12-01 1990-05-15 Rhone-Poulenc Sante Process for the preparation of unsaturated alcohols
US4929776A (en) * 1987-12-01 1990-05-29 Rhone-Poulenc Sante Process for the preparation of unsaturated alcohols
CN101031531A (en) * 2004-09-29 2007-09-05 巴斯福股份公司 Proess for producing an optically active 2-methyl-alkane-1-ols from the corresponding 2-methylalk-2-en-1-als, comprising a step of enantioselective acylation to enrich one enantiomer

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4219677A (en) * 1976-07-27 1980-08-26 Rhone-Poulenc Industries Telomerization process
US4925990A (en) * 1987-12-01 1990-05-15 Rhone-Poulenc Sante Process for the preparation of unsaturated alcohols
US4929776A (en) * 1987-12-01 1990-05-29 Rhone-Poulenc Sante Process for the preparation of unsaturated alcohols
CN101031531A (en) * 2004-09-29 2007-09-05 巴斯福股份公司 Proess for producing an optically active 2-methyl-alkane-1-ols from the corresponding 2-methylalk-2-en-1-als, comprising a step of enantioselective acylation to enrich one enantiomer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107089900A (en) * 2017-04-28 2017-08-25 山东新和成药业有限公司 A kind of preparation method of β benzyl carbinols
CN107089900B (en) * 2017-04-28 2020-06-26 山东新和成药业有限公司 Preparation method of β -phenethyl alcohol
CN110643556A (en) * 2019-08-23 2020-01-03 浙江工业大学 A recombinant genetically engineered bacterium co-expressing alkenaldehyde reductase and glucose dehydrogenase and its application
CN114262257A (en) * 2020-09-16 2022-04-01 万华化学集团股份有限公司 Method for recovering isoamyl alcohol through hydrogenation of citral process waste liquid
CN114262257B (en) * 2020-09-16 2023-07-14 万华化学集团股份有限公司 A method for recovering isoamyl alcohol by hydrogenation of citral process waste liquid

Also Published As

Publication number Publication date
CN104387235B (en) 2017-02-22

Similar Documents

Publication Publication Date Title
CN102260147B (en) Method for hydroformylation of olefins in ionic liquid solvent
EP3257831B1 (en) Circular economy methods of preparing unsaturated compounds
CN105339336B (en) Conversion of CO2 to fuels and chemicals
CN103769094B (en) A kind of eggshell catalyst for selective hydrogenation reaction, preparation method and application
CN103360215B (en) The method of a kind of 3-methyl-3-butene-1-alcohol catalysis transposition synthesis prenol in water-organic biphasic system
CN106008184B (en) The method that isobutene prepares 3 methylbutyraldehyds
Mendes-Burak et al. Selective hydrogenation of α, β-unsaturated carbonyl compounds on silica-supported copper nanoparticles
KR20160098466A (en) Method for producing ethanol and coproducing methanol
CN104945219A (en) Method for one-step preparation of methylbenzene and p-xylene by utilizing benzene and syngas, and catalyst therefor
CN104387235A (en) Method for synthesizing prenol employing selective hydrogenation of 3-methylcrotonaldehyde
CN101747152B (en) Citral liquid-phase hydrogenation method for synthesizing unsaturated alcohols
CN101260028B (en) Method for preparing iso-butyl aldehyde by using isobutene or tert-butyl alcohol as raw material
CN102775338B (en) All-trans-retinoic acid synthetic method
CN106278854B (en) A kind of preparation method by α-isophorone isomery β-isophorone
CN105175231A (en) Method for preparing allyl alcohol through selective hydrogenation of propargyl alcohol
Yu et al. An Improved Method for the Complete Hydrogenation of Aromatic Compounds under 1 Bar H 2 with Platinum Nanowires.
CN104016857B (en) The method preparing methyl formate
Shanmugapriya et al. A suitable modified palladium immobilized on imidazolium supported ionic liquid catalysed transfer hydrogenation of nitroarenes
CN103304386B (en) Method for preparing acetal through alkene hydroformylation-acetalation one-pot method
CN106699507A (en) Preparation method for alpha-phenethanol
CN109809973B (en) Method for preparing 2-ethylhexanal
CN115557829B (en) Method for co-producing methanol and ethanol from synthesis gas
CN103694078B (en) With the method that methanol and butylene prepare aromatic hydrocarbons for raw material
CN100369876C (en) A kind of synthetic method of α-phenethyl alcohol
CN103214365B (en) Method for producing cyclohexyl acetate through benzene

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant