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NO995494L - Reduction of aromatic halides - Google Patents

Reduction of aromatic halides

Info

Publication number
NO995494L
NO995494L NO995494A NO995494A NO995494L NO 995494 L NO995494 L NO 995494L NO 995494 A NO995494 A NO 995494A NO 995494 A NO995494 A NO 995494A NO 995494 L NO995494 L NO 995494L
Authority
NO
Norway
Prior art keywords
reduction
oxygen
aromatic halides
technical
lialh4
Prior art date
Application number
NO995494A
Other languages
Norwegian (no)
Other versions
NO995494D0 (en
Inventor
Laszlo Czollner
Johannes Froehlich
Ulrich Jordis
Bernhard Kueenburg
Original Assignee
Sanochemia Pharmazeutica Ag
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 Sanochemia Pharmazeutica Ag filed Critical Sanochemia Pharmazeutica Ag
Publication of NO995494L publication Critical patent/NO995494L/en
Publication of NO995494D0 publication Critical patent/NO995494D0/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B31/00—Reduction in general
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
    • C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
    • C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
    • C07D333/08—Hydrogen atoms or radicals containing only hydrogen and carbon atoms
    • C07D333/10—Thiophene
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
    • C07C1/26—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only halogen atoms as hetero-atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

For reduksjon av (hetero)aromatiske halogenider med generell formel (I) Ar-Xn til forbindelser med generell formel (II) Ar-Hn anvendes et reduksjonsmiddel, spesielt en hydridreagens, som litiumaluminiumhydrid (LiAlH4) i nærvær av oksygen, spesielt i form av en oksygen-inertgass-blanding. Reduksjonen i nærvær av oksygen gir gode utbytter ved korte reaksjonstider, også når det arbeides i halvtekniske eller tekniske blandinger. Reduksjonen med LiAlH4 i nærvær av oksygen er også egnet for reduksjonen av kompliserte heieroaromatiske halogenider, eksempelvis for reduksjonen av bromnarwedinketal til narwedinketal i teknisk målestokk.For reduction of (hetero) aromatic halides of general formula (I) Ar-Xn to compounds of general formula (II) Ar-Hn, a reducing agent, especially a hydride reagent, is used as lithium aluminum hydride (LiAlH4) in the presence of oxygen, especially in the form of an oxygen-inert gas mixture. The reduction in the presence of oxygen gives good yields at short reaction times, even when working in semi-technical or technical mixtures. The reduction with LiAlH4 in the presence of oxygen is also suitable for the reduction of complicated halo aromatic halides, for example, for the reduction of bromine nerve metal to narwedine metal on a technical scale.

NO995494A 1997-05-21 1999-11-10 Reduction of aromatic halides NO995494D0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0086597A AT405051B (en) 1997-05-21 1997-05-21 REDUCTION OF AROMATIC HALOGENIDE
PCT/AT1998/000112 WO1998052885A1 (en) 1997-05-21 1998-04-30 Reduction of aromatic halogenides

Publications (2)

Publication Number Publication Date
NO995494L true NO995494L (en) 1999-11-10
NO995494D0 NO995494D0 (en) 1999-11-10

Family

ID=3501602

Family Applications (1)

Application Number Title Priority Date Filing Date
NO995494A NO995494D0 (en) 1997-05-21 1999-11-10 Reduction of aromatic halides

Country Status (15)

Country Link
EP (1) EP0983215A1 (en)
JP (1) JP2001525828A (en)
KR (1) KR20010012795A (en)
CN (1) CN1257467A (en)
AT (1) AT405051B (en)
AU (1) AU7012798A (en)
BG (1) BG103880A (en)
BR (1) BR9809661A (en)
CA (1) CA2289992A1 (en)
HU (1) HUP0004681A2 (en)
NO (1) NO995494D0 (en)
NZ (1) NZ500733A (en)
PL (1) PL336906A1 (en)
SK (1) SK158399A3 (en)
WO (1) WO1998052885A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006018703A2 (en) * 2004-08-16 2006-02-23 Ranbaxy Laboratories Limited Processes for preparation of narwedine and its use in the synthesis of galantamine
WO2012073973A1 (en) * 2010-12-02 2012-06-07 横浜ゴム株式会社 Tire equipped with information acquisition device
CN107602318B (en) * 2017-09-08 2020-06-05 郑州大学 A method for liquid-phase reductive dehalogenation of halogenated aromatic hydrocarbons under mild conditions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3839329A1 (en) * 1988-11-22 1990-05-31 Basf Ag METHOD FOR THE REDUCTIVE ENTHALOGENATION OF AROMATES

Also Published As

Publication number Publication date
WO1998052885A1 (en) 1998-11-26
AT405051B (en) 1999-05-25
KR20010012795A (en) 2001-02-26
CN1257467A (en) 2000-06-21
EP0983215A1 (en) 2000-03-08
CA2289992A1 (en) 1998-11-26
JP2001525828A (en) 2001-12-11
ATA86597A (en) 1998-09-15
SK158399A3 (en) 2000-07-11
AU7012798A (en) 1998-12-11
NO995494D0 (en) 1999-11-10
NZ500733A (en) 2001-03-30
HUP0004681A2 (en) 2001-04-28
BR9809661A (en) 2000-07-11
BG103880A (en) 2000-06-30
PL336906A1 (en) 2000-07-17

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