GB1501558A - Asymmetric hydrogenation of alkenoic acids and their esters - Google Patents

Asymmetric hydrogenation of alkenoic acids and their esters

Info

Publication number
GB1501558A
GB1501558A GB3512576A GB3512576A GB1501558A GB 1501558 A GB1501558 A GB 1501558A GB 3512576 A GB3512576 A GB 3512576A GB 3512576 A GB3512576 A GB 3512576A GB 1501558 A GB1501558 A GB 1501558A
Authority
GB
United Kingdom
Prior art keywords
formula
image
asymmetric hydrogenation
esters
alkenoic acids
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.)
Expired
Application number
GB3512576A
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.)
Monsanto Co
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Publication of GB1501558A publication Critical patent/GB1501558A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/303—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by hydrogenation of unsaturated carbon-to-carbon bonds

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)

Abstract

The geometric Z isomer of a compound of the formula: <IMAGE> is subjected to asymmetric hydrogenation with homogeneous catalysis. The catalyst used is a coordination complex of rhodium, iridium and/or ruthenium. The complex contains an optically active ligand of the formula: <IMAGE> This gives enantiomorphs of corresponding compounds of the formula: <IMAGE> with a high degree of optical purity. At least one of the carbon atoms of the groups of the formula <IMAGE> represented in formula A or B is asymmetric. In the formulae, R, R<1>, R<2>, R<3>, A and D have the meanings given in Patent Claim 1.
GB3512576A 1975-08-25 1976-08-24 Asymmetric hydrogenation of alkenoic acids and their esters Expired GB1501558A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60709075A 1975-08-25 1975-08-25

Publications (1)

Publication Number Publication Date
GB1501558A true GB1501558A (en) 1978-02-15

Family

ID=24430767

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3512576A Expired GB1501558A (en) 1975-08-25 1976-08-24 Asymmetric hydrogenation of alkenoic acids and their esters

Country Status (10)

Country Link
JP (1) JPS5850207B2 (en)
AU (1) AU499782B2 (en)
BE (1) BE845454A (en)
BR (1) BR7605568A (en)
CA (1) CA1086771A (en)
CH (1) CH624088A5 (en)
DE (1) DE2638070A1 (en)
FR (1) FR2322126A1 (en)
GB (1) GB1501558A (en)
NL (1) NL7609340A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6706926B1 (en) 1998-10-29 2004-03-16 Isis Innovation Limited Diphosphines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6706926B1 (en) 1998-10-29 2004-03-16 Isis Innovation Limited Diphosphines

Also Published As

Publication number Publication date
JPS5850207B2 (en) 1983-11-09
DE2638070A1 (en) 1977-03-10
CH624088A5 (en) 1981-07-15
JPS5227716A (en) 1977-03-02
CA1086771A (en) 1980-09-30
FR2322126B1 (en) 1980-05-16
AU499782B2 (en) 1979-05-03
NL7609340A (en) 1977-03-01
FR2322126A1 (en) 1977-03-25
BR7605568A (en) 1977-08-09
BE845454A (en) 1977-02-24
AU1709476A (en) 1978-03-02

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19941201