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EP1436301A1 - Procede de production, via des organometalliques, de produits intermediaires organiques - Google Patents

Procede de production, via des organometalliques, de produits intermediaires organiques

Info

Publication number
EP1436301A1
EP1436301A1 EP02801306A EP02801306A EP1436301A1 EP 1436301 A1 EP1436301 A1 EP 1436301A1 EP 02801306 A EP02801306 A EP 02801306A EP 02801306 A EP02801306 A EP 02801306A EP 1436301 A1 EP1436301 A1 EP 1436301A1
Authority
EP
European Patent Office
Prior art keywords
substituted
halogen
alkyl
lithium
compounds
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.)
Withdrawn
Application number
EP02801306A
Other languages
German (de)
English (en)
Inventor
Detlef Wehle
Klaus Forstinger
Andreas Meudt
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.)
Euticals GmbH
Original Assignee
Clariant GmbH
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 Clariant GmbH filed Critical Clariant GmbH
Publication of EP1436301A1 publication Critical patent/EP1436301A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F1/00—Compounds containing elements of Groups 1 or 11 of the Periodic Table
    • C07F1/02—Lithium compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/45—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by condensation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/15—Preparation of carboxylic acids or their salts, halides or anhydrides by reaction of organic compounds with carbon dioxide, e.g. Kolbe-Schmitt synthesis

Definitions

  • the invention relates to a process for the production of organic compounds by producing aryllithium compounds and reacting them with suitable electrophiles, a lithium alkyl being first generated by reacting haloaliphatics with lithium metal (step 1 in equation I), which is then carried out in a halogen-metal exchange reaction with aromatic
  • Halogen compounds are reacted to form the desired lithium aromatics (step 2 in equation I), these finally being reacted with an appropriate electrophile,
  • Step 1 creating the base lithium
  • Lithium organyle for the construction of complex organic structures on the other hand.
  • Li organyls can also be prepared by reacting bromine aromatics with lithium metal
  • n-, s- and tert-butyllithium produce either butanes (deprotonations), butyl halides (halogen-metal exchange, one equivalent of BuLi) or butene and butane (halogen-metal exchange, two equivalents of BuLi) are gaseous at room temperature and escape the reaction mixtures during the required hydrolytic work-ups.
  • complex exhaust gas purification or corresponding combustion devices are also required to meet the strict legal immission regulations.
  • the specialized companies offer alternatives such as n-hexyllithium, which do not produce butanes, but are significantly more expensive than butyllithium.
  • alkyl lithium compounds can usually not be offered in these solvents.
  • the manufacturers do offer a wide range of alkyl lithium compounds of different concentrations in different
  • Hydrocarbons however, for example, halogen-metal exchanges do not take place in pure hydrocarbons, so that one necessarily has to work in mixtures of ethers and hydrocarbons. Therefore, after hydrolysis, water-containing mixtures of ethers and hydrocarbons are obtained, the separation of which is complex and in many cases cannot be carried out economically. For large-scale industrial production, however, recycling the solvents used is an essential requirement.
  • the present invention achieves all of these objects and relates to a process for the preparation of aryllithium compounds by reacting haloaliphates with lithium metal to form a lithium alkyl and further reaction with aromatic halogen compounds (III) with a halogen-metal exchange reaction to give the corresponding lithium aromatics (IV), these optionally can be reacted in a further step with an appropriate electrophile (equation I),
  • Step 1 creating the base lithium
  • R is methyl, primary, secondary or tertiary alkyl radicals with two to 12 C atoms which are optionally substituted by a radical from the following group: ⁇ phenyl, substituted phenyl, aryl, heteroaryl, alkoxy, dialkylamino, alkylthio ⁇ , substituted alkyl, substituted or unsubstituted cycloalkyl having 3 to 8 C atoms,
  • Hali fluorine, chlorine, bromine or iodine
  • Hal 2 represents chlorine, bromine or iodine
  • X- ⁇ -5 independently of one another represent carbon or one or more groupings X 1 .
  • R 1 -5 can denote nitrogen or two adjacent radicals X 1 .
  • 5 R 1 -5 can together represent O (furans), S (thiophenes), NH or NR '(pyrroles), where R' is C ⁇ _ 5 alkyl, SO ? -Phenyl, S0 2 -p-tolyl or benzoyl.
  • Preferred compounds of formula (III) which can be reacted by the process according to the invention are e.g. Benzenes, pyridines, pyrimidines,
  • Pyrazines, pyridazines, furans, thiophenes, pyrroles, any N-substituted pyrroles or naphthalenes examples include bromobenzene, 2-, 3- and 4-bromobenzotrifluoride, 2-, 3- and 4-chlorobenzotrifluoride, furan, 2-methylfuran, furfural acetals, thiophene, 2-methylthiophene, N-trimethylsilylpyrrole, 2,4-dichlorobromobenzene, Pentachlorobromobenzene and 4-bromo- or 4-iodobenzonitrile.
  • . 5 represent substituents from the group ⁇ hydrogen, methyl, primary, secondary or tertiary, cyclic or acyclic alkyl radicals having 2 to 12 carbon atoms, in which one or more hydrogen atoms are optionally replaced by fluorine, for example CF 3) substituted cyclic or acyclic
  • Alkyl groups alkoxy, dialkylamino, alkylamino, arylamino, diarylamino, phenyl, substituted phenyl, alkylthio, diarylphosphino, dialkylphosphino, dialkyl- or diarylaminocarbonyl, monoalkyl- or monoarylaminocarbonyl, CO 2 " , hydroxyalkyl, alkoxyalkyl, each can be fluorine or chlorine ⁇ or es two adjacent radicals R 1, 4 together correspond to an aromatic or aliphatic fused ring.
  • the lithium organyls prepared in this way can be reacted with any electrophilic compounds by methods of the prior art.
  • C, C linkages can be carried out by reaction with carbon electrophiles
  • boronic acids can be produced by reaction with boron compounds
  • a very efficient route to organosilanes is opened up by reaction with halogen or alkoxysilanes.
  • halogen aliphatics All available fluorine, chlorine, bromine or iodine aliphates can be used as halogen aliphatics (I), since lithium metal in ethereal solvents reacts easily with all halogen aliphatics and in almost all cases with quantitative yields.
  • Chlorine or bromoaliphatics are preferably used here, since iodine compounds are often expensive, fluorine compounds lead to the formation of LiF, which can lead to material problems in later aqueous work-ups as HF. In special cases, however, such halides can also be used advantageously.
  • Alkyl halides are preferably used which, after the halogen-metal exchange, are converted to liquid alkanes / alkenes (two equivalents of RLi) or alkyl halides (one equivalent of RLi). Chloro- or bromocyclohexane, benzyl chloride, chlorhexanes or chlorheptanes are particularly preferably used.
  • Suitable ethereal solvents are, for example, tetrahydrofuran, dioxane, diethyl ether, di-n-butyl ether, diisopropyl ether or anisole; THF is preferably used.
  • the preferred reaction temperatures are between -100 and + 25 ° C, temperatures between -80 and -10 ° C are particularly preferred. In most cases, it is possible to work with very high concentrations of organolithium compounds. Concentrations of the aliphatic or aromatic intermediates (IV) of 5 to 30% by weight, in particular 12 to 25% by weight, are preferred.
  • the haloalkane is first metered into the lithium metal in the ether, the lithium aliphatic (II) initially being formed. Then either the halogen aromatic (III) to be metallized is added first and then the electrophilic reactant, or in a one-pot variant halogen aromatic and electrophile are either added as a mixture or simultaneously.
  • the lithium can be used in the present process as a dispersion, powder, chips, sand, granules, pieces, bars or in another form, the size of the lithium particles not being quality-relevant, but rather only influencing the reaction times. Smaller particle sizes are therefore preferred, for example granules, powders or dispersions.
  • the amount of lithium added per mole of halogen to be reacted is 1.95 to 2.5 mol, preferably 1.98 to 2.15 mol.
  • Aromatics which can be used for halogen-metal exchange are initially all aromatic bromine and iodine compounds.
  • those with activating, ie. H. strongly electron-withdrawing substituents such as CF3 residues, can be lithiated in good yields.
  • the lithium aromatics (IV) generated according to the invention can be reacted with electrophilic compounds by the methods familiar to the person skilled in the art, carbon and boron and silicon electrophiles in particular being of interest to the pharmaceutical and agrochemical industry with regard to the intermediate products required.
  • the reaction with the electrophile can either take place after the production of the lithiated compound (III) or, as already described above, in a one-pot process by simultaneous addition to the reaction mixture.
  • the carbon electrophiles come in particular from one of the following
  • Aryl or alkyl cyanates (benzonitriles) oxirane, substituted oxiranes (ArCH 2 CH 2 OH, ArCR 2 CR 2 OH) with R R 1 (identical or different)
  • Immonium salts aromatic amines
  • aromatic amines halogen aromatics
  • aryl triflates aryl sulfonates
  • Alkali and alkaline earth salts of carboxylic acids (ArCHO for formates, ArCOCH3 for
  • Compounds of the formula BW 3 are used as boron electrophiles, in which W is independently of one another for identical or different (Ci-C ⁇ -alkoxy), fluorine, chlorine, bromine, iodine, N (-C 6 alkyl) 2 or S ⁇ Cs Alkyl), trialkoxyboranes, BF 3 * OR, BF 3 * THF, BCI 3 or BBr3 are preferred, trialkoxyboranes being particularly preferred.
  • SiW 4 Compounds of the formula SiW 4 are used as silicon electrophiles, in which W independently of one another represents identical or different (Ci-C ⁇ -alkoxy), fluorine, chlorine, bromine, iodine, N (CrC 6 -alkyl) 2 or S (CC 5 - Alkyl), tetraalkoxysilanes, tetrachlorosilanes or substituted alkyl or aryl halosilanes or substituted alkyl or aryl alkoxysilanes are preferred.
  • the method according to the invention opens up a very economical method for carrying out the transformation of aromatic halogen into any residues in a very economical way.
  • the work-ups are generally aqueous, with either water or aqueous mineral acids being metered in or the reaction mixture being metered into water or aqueous mineral acids.
  • the pH of the product to be isolated is adjusted here, ie usually a slightly acidic, in the case of heterocycles also slightly alkaline pH.
  • the reaction products are obtained, for example, by extraction and evaporation of the organic phases, alternatively the organic solvents can also be distilled off from the hydrolysis mixture and the product which then precipitates can be obtained by filtration.
  • the purities of the products from the processes according to the invention are generally high, but a further purification step, for example by recrystallization with the addition of small amounts of activated carbon, may be required for special applications (pharmaceutical precursors).
  • the yields of the reaction products are 70 to 99%, typical yields are in particular 85 to 95%.
  • reaction mixture After stirring for 30 minutes, the reaction mixture is added to 120 g of water, the pH is adjusted to 6.3 with 37% HCl and the low boilers are distilled off at 45 ° C. under a slight vacuum. The organic phase is separated off and the aqueous phase is extracted twice with 70 mL toluene each time. After vacuum fractionation, 29.5 g of 4-trifluoromethylacetophenone are obtained from the combined organic phases as a colorless liquid (0.157 mol, 92.2%), GC purity> 98% a / a.
  • a solution of 0.35 mol of cyclohexyllithium in THF was prepared in accordance with the procedure given in Example 1.
  • a solution of 31.4 g of bromobenzene (0.20 mol) in 50 g of THF were added dropwise in 1 h.
  • the dark solution obtained was metered onto 200 g of crushed, anhydrous dry ice under nitrogen.
  • benzoic acid was obtained in a yield of 91%.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Procédé de production de composés d'aryllithium par réaction d'halogénaliphates (I) avec du lithium métal, en vue d'obtenir un lithiumalkyle (II), puis réaction subséquente avec des composés halogène aromatiques (III) avec réaction d'échange halogène-métal conduisant aux composés aromatiques de lithium correspondants (IV) : Etape 1 : production de la base ; étape 2 : échange halogène-métal (équation I), formules dans lesquelles R désigne méthyle, reste alkyle primaire, secondaire ou tertiaire de 2 à 12 atomes de C, qui sont éventuellement substitués par un reste appartenant aux groupes ci-après : {phényle, phényle substitué, aryle, hétéroaryle, alcoxy, dialkylamino, alkylthio}, alkyle substitué, cycloalkyle substitué ou non substitué de 3 à 8 atomes de C, Hal1 = fluor, chlore, brome ou iode, Hal2 désigne chlore, brome ou iode, X1-15 désignent, indépendamment, un carbone ou un ou plusieurs groupements X1-5 R1-5 peuvent désigner l'azote, ou deux restes voisins X1-5 R1-5 peuvent désigner, conjointement, O, S, NH ou NR', où R' désigne C1-5-alkyle, S02-phényle, S02-p-tolyle ou benzoyle ; les restes R1-5 désignent des substituants appartenant au groupe {hydrogène, méthyle, restes alkyle primaire, secondaire ou tertiaire cycliques ou acycliques de 2 à 12 atomes de C, pour lesquels, le cas échéant, un ou plusieurs atomes d'hydrogène sont remplacés par du fluor, par exemple, CF3, des groupes alkyle cycliques ou acycliques substitués, alcoxy, dialkylamino, alkylamino, arylamino, diarylamino, phényle, phényle substitué, alkylthio, diarylphosphino, dialkylphosphino, dialkyl- ou diarylaminocarbonyle, monoalkyl- ou monoarylaminocarbonyle, CO2 -, hydroxyalkyle, alcoxyalkyle, fluor ou chlore}, deux restes R1-4 voisins pouvant, d'autre part, également correspondre à un noyau aromatique ou aliphatique condensé sur la chaîne.
EP02801306A 2001-10-12 2002-10-02 Procede de production, via des organometalliques, de produits intermediaires organiques Withdrawn EP1436301A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10150614 2001-10-12
DE10150614A DE10150614A1 (de) 2001-10-12 2001-10-12 Verfahren zur metallorganischen Herstellung organischer Zwischenprodukte über Halogen-Metall-Austauschreaktionen
PCT/EP2002/011052 WO2003033504A1 (fr) 2001-10-12 2002-10-02 Procede de production, via des organometalliques, de produits intermediaires organiques

Publications (1)

Publication Number Publication Date
EP1436301A1 true EP1436301A1 (fr) 2004-07-14

Family

ID=7702418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02801306A Withdrawn EP1436301A1 (fr) 2001-10-12 2002-10-02 Procede de production, via des organometalliques, de produits intermediaires organiques

Country Status (7)

Country Link
US (1) US20050001333A1 (fr)
EP (1) EP1436301A1 (fr)
JP (1) JP2005505629A (fr)
CN (1) CN1568327A (fr)
DE (1) DE10150614A1 (fr)
RU (1) RU2004114272A (fr)
WO (1) WO2003033504A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10150615A1 (de) * 2001-10-12 2003-04-30 Clariant Gmbh Verfahren zur metallorganischen Herstellung organischer Zwischenprodukte
NZ551027A (en) 2004-04-08 2011-01-28 Targegen Inc Benzotriazine inhibitors of kinases
MY167260A (en) 2005-11-01 2018-08-14 Targegen Inc Bi-aryl meta-pyrimidine inhibitors of kinases
WO2009089310A1 (fr) * 2008-01-11 2009-07-16 Dow Agrosciences Llc Procédé pour la déprotonation et la fonctionnalisation sélectives de 1-fluoro-2-substitué-3-chlorobenzènes
WO2012060847A1 (fr) 2010-11-07 2012-05-10 Targegen, Inc. Compositions et procédés de traitement de la myélofibrose
US9592598B2 (en) 2013-03-15 2017-03-14 Caterpillar Inc. Hydraulic hammer having impact system subassembly
BR112019005668A2 (pt) 2016-09-22 2019-06-04 Bayer Ag novos derivados de triazol
BR112019005660A2 (pt) 2016-09-22 2019-06-04 Bayer Cropscience Ag novos derivados de triazol e seu uso como fungicidas
AU2017333782A1 (en) 2016-09-29 2019-03-28 Bayer Aktiengesellschaft Novel 5-substituted imidazolylmethyl derivatives
CN109803965A (zh) 2016-09-29 2019-05-24 拜耳作物科学股份公司 作为杀真菌剂的5-取代的咪唑基甲基二氧戊环衍生物
WO2018145932A1 (fr) 2017-02-08 2018-08-16 Bayer Cropscience Aktiengesellschaft Dérivés de triazole et utilisations de ces derniers en tant que fongicides
EP3580217A1 (fr) 2017-02-08 2019-12-18 Bayer Aktiengesellschaft Dérivés de triazolethione
EP3580218A1 (fr) 2017-02-08 2019-12-18 Bayer CropScience Aktiengesellschaft Nouveaux dérivés de triazole
WO2018145921A1 (fr) 2017-02-10 2018-08-16 Bayer Aktiengesellschaft Composition pour lutter contre des micro-organismes nuisibles comprenant des dérivés de 1-(phénoxy-pyridinyl)-2-(1,2,4-triazol-1-yl)-éthanol
WO2020020816A1 (fr) 2018-07-26 2020-01-30 Bayer Aktiengesellschaft Nouveaux dérivés de triazole

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3649701A (en) * 1969-02-26 1972-03-14 Foote Mineral Co Preparation of solutions of cyclohexyllithium
US3780045A (en) * 1972-08-29 1973-12-18 Nat Hellenic Res Foundation Preparation of organolithium compounds
DE10150615A1 (de) * 2001-10-12 2003-04-30 Clariant Gmbh Verfahren zur metallorganischen Herstellung organischer Zwischenprodukte

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
M. SCHLOSSER: "organometallics in synthesis", 1994, WILEY, UNITED KINGDOM *
PATENT ABSTRACTS OF JAPAN *
See also references of WO03033504A1 *
T.A. ONDRUS ET AL., AUST. J. CHEM., vol. 32, 1979, pages 2313 - 2316 *

Also Published As

Publication number Publication date
DE10150614A1 (de) 2003-04-30
US20050001333A1 (en) 2005-01-06
CN1568327A (zh) 2005-01-19
WO2003033504A1 (fr) 2003-04-24
JP2005505629A (ja) 2005-02-24
RU2004114272A (ru) 2005-10-27

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