GEP19970840B - A process for the preparation of propionic acid derivatives and stereochemical isomers thereof - Google Patents

A process for the preparation of propionic acid derivatives and stereochemical isomers thereof

Info

Publication number
GEP19970840B
GEP19970840B GEAP19942324A GEAP1994002324A GEP19970840B GE P19970840 B GEP19970840 B GE P19970840B GE AP19942324 A GEAP19942324 A GE AP19942324A GE AP1994002324 A GEAP1994002324 A GE AP1994002324A GE P19970840 B GEP19970840 B GE P19970840B
Authority
GE
Georgia
Prior art keywords
propionic acid
preparation
acid derivatives
stereochemical isomers
bromo
Prior art date
Application number
GEAP19942324A
Inventor
Paul John Defraine
Ian Ferguson
Michael Gordon Hutchings
Alan John Buckley
Christopher Richard Ay Godfrey
Patrick Jelf Crowley
John Martin Clough
Kevin Beautement
Stephen Paul Heaney
Vivienne Margaret Anthony
Original Assignee
Imperial Chemical Ind Plჩ
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
Priority claimed from GB878721706A external-priority patent/GB8721706D0/en
Priority claimed from GB888801485A external-priority patent/GB8801485D0/en
Priority claimed from GB888806317A external-priority patent/GB8806317D0/en
Priority claimed from GB888814734A external-priority patent/GB8814734D0/en
Application filed by Imperial Chemical Ind Plჩ filed Critical Imperial Chemical Ind Plჩ
Publication of GEP19970840B publication Critical patent/GEP19970840B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Catalysts (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

A process for the preparation of the individual optical isomers of alpha - chloro- (or bromo-) propionic acid esters, which comprises reacting an (L)- lactic acid ester with thionyl chloride (or bromide) (a) in the presence of a base to give a (D)- alpha -chloro- (or bromo-) propionic acid ester or (b) in the absence of a base to give an (L)- alpha -chloro-(or bromo-) propionic acid ester. The products are useful as intermediates in the synthesis of certain herbicides.
GEAP19942324A 1987-09-15 1994-12-29 A process for the preparation of propionic acid derivatives and stereochemical isomers thereof GEP19970840B (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB878721706A GB8721706D0 (en) 1987-09-15 1987-09-15 Fungicides
GB888801485A GB8801485D0 (en) 1988-01-22 1988-01-22 Fungicides
GB888806317A GB8806317D0 (en) 1988-03-17 1988-03-17 Fungicides
GB888814734A GB8814734D0 (en) 1988-06-21 1988-06-21 Fungicides

Publications (1)

Publication Number Publication Date
GEP19970840B true GEP19970840B (en) 1997-02-11

Family

ID=27449984

Family Applications (1)

Application Number Title Priority Date Filing Date
GEAP19942324A GEP19970840B (en) 1987-09-15 1994-12-29 A process for the preparation of propionic acid derivatives and stereochemical isomers thereof

Country Status (4)

Country Link
GE (1) GEP19970840B (en)
LV (1) LV10079A (en)
PL (1) PL158290B1 (en)
RU (4) RU2014320C1 (en)

Also Published As

Publication number Publication date
PL158290B1 (en) 1992-08-31
LV10079A (en) 1994-05-10
RU2014321C1 (en) 1994-06-15
RU2014320C1 (en) 1994-06-15
PL274572A1 (en) 1989-12-27
RU1836328C (en) 1993-08-23
RU2026282C1 (en) 1995-01-09

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