GB1448316A – Racemization of optically active 2,2-dimethyl-3,1,-alkenyl- cyclopropane-1-carboxylic acids
– Google Patents
GB1448316A – Racemization of optically active 2,2-dimethyl-3,1,-alkenyl- cyclopropane-1-carboxylic acids
– Google Patents
Racemization of optically active 2,2-dimethyl-3,1,-alkenyl- cyclopropane-1-carboxylic acids
Info
Publication number
GB1448316A
GB1448316A
GB4864374A
GB4864374A
GB1448316A
GB 1448316 A
GB1448316 A
GB 1448316A
GB 4864374 A
GB4864374 A
GB 4864374A
GB 4864374 A
GB4864374 A
GB 4864374A
GB 1448316 A
GB1448316 A
GB 1448316A
Authority
GB
United Kingdom
Prior art keywords
racemization
cyclopropane
alkenyl
dimethyl
carboxylic acids
Prior art date
1973-11-12
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
GB4864374A
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical 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.)
1973-11-12
Filing date
1974-11-11
Publication date
1976-09-02
1974-11-11
Application filed by Sumitomo Chemical Co Ltd
filed
Critical
Sumitomo Chemical Co Ltd
1976-09-02
Publication of GB1448316A
publication
Critical
patent/GB1448316A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
C07C51/42—Separation; Purification; Stabilisation; Use of additives
C07C51/487—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
Abstract
1448316 Racemization of cyclopropane carboxylic acid halides SUMITOMO CHEMICAL CO Ltd 11 Nov 1974 [12 Nov 1973] 48643/74 Heading C2C Compounds of the formula where R 1 and R 2 are H or C 1 -C 4 alkyl or together with the carbon atom to which they are attached form a C 4 -C 6 cycloalkylidene group and X is halogen, are racemized by contact with a Lewis acid. The racemized acid halide may subsequently be converted to the free acid.
GB4864374A
1973-11-12
1974-11-11
Racemization of optically active 2,2-dimethyl-3,1,-alkenyl- cyclopropane-1-carboxylic acids
Expired
GB1448316A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP12750273A
JPS5337858B2
(en)
1973-11-12
1973-11-12
Publications (1)
Publication Number
Publication Date
GB1448316A
true
GB1448316A
(en)
1976-09-02
Family
ID=14961548
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB4864374A
Expired
GB1448316A
(en)
1973-11-12
1974-11-11
Racemization of optically active 2,2-dimethyl-3,1,-alkenyl- cyclopropane-1-carboxylic acids
Country Status (11)
Country
Link
US
(1)
US3989750A
(en)
JP
(1)
JPS5337858B2
(en)
BE
(1)
BE822046A
(en)
CA
(1)
CA1025475A
(en)
CH
(1)
CH615411A5
(en)
DK
(1)
DK586374A
(en)
FR
(1)
FR2250728B1
(en)
GB
(1)
GB1448316A
(en)
IT
(1)
IT1024802B
(en)
NL
(1)
NL7414766A
(en)
SU
(1)
SU722479A3
(en)
Families Citing this family (15)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4206140A
(en)
*
1966-08-26
1980-06-03
Roussel Uclaf
Novel cyclopropanecarboxylic acids and esters
JPS52144651A
(en)
*
1976-05-24
1977-12-02
Sumitomo Chem Co Ltd
Racemization of optical active 2,2-dimethyl-3-(1-alkenyl)-cyclopropane-1-carboxylic acid
JPS57163341A
(en)
*
1981-03-30
1982-10-07
Sumitomo Chem Co Ltd
Preparation of racemized cyclopropanecarboxylic acid derivative
US4473703A
(en)
*
1981-03-30
1984-09-25
Sumitomo Chemical Company, Limited
Method of epimerization of alkyl chrysanthemate
JPS5869831A
(en)
*
1981-10-22
1983-04-26
Sumitomo Chem Co Ltd
Preparation of (+)-trans chrysanthemum-monocarboxylic acid
EP0155765B1
(en)
*
1984-02-22
1988-10-05
Sumitomo Chemical Company, Limited
Method for racemization of chrysanthemic acid or its ester
EP0165070B1
(en)
*
1984-06-15
1990-06-13
Sumitomo Chemical Company, Limited
Method for racemization of chrysanthemic acid or its ester
JPS62198643A
(en)
*
1986-02-27
1987-09-02
Sumitomo Chem Co Ltd
Production of racemic chrysanthemum-monocarboxylic acid
HU202171B
(en)
*
1986-09-04
1991-02-28
Sumitomo Chemical Co
Process for racemization of chrysanthemic acid and its esters, as well as for conversion of the racemic mixture
EP0282221B1
(en)
*
1987-03-09
1992-01-15
Sumitomo Chemical Company, Limited
Method for racemization of optically active chrysanthemic acid or its ester
HU203513B
(en)
*
1987-04-28
1991-08-28
Sumitomo Chemical Co
Process for racemizing and trans-isomerizing optically active chrisanthemic acid derivatives
JPH0688933B2
(en)
*
1987-07-17
1994-11-09
住友化学工業株式会社
Racemization Method for Optically Active Primary Chrysanthemic Acids
US4962233A
(en)
*
1988-05-19
1990-10-09
Sumitomo Chemical Co., Ltd.
Process for preparing racemic dihalovinylcyclopropane carboxylic acid halides
US5840958A
(en)
*
1996-10-17
1998-11-24
Fmc Corporation
1S to 1R Epimerizations of pyrethroid intermediates
CN114539045B
(en)
*
2020-11-18
2023-07-21
中国科学院大连化学物理研究所
Racemization method of trans-L-chrysanthemic acid
Family Cites Families (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
FR2038019A5
(en)
*
1969-03-22
1970-12-31
Sumitomo Chemical Co
1973
1973-11-12
JP
JP12750273A
patent/JPS5337858B2/ja
not_active
Expired
1974
1974-11-08
US
US05/522,130
patent/US3989750A/en
not_active
Expired – Lifetime
1974-11-08
CA
CA213,346A
patent/CA1025475A/en
not_active
Expired
1974-11-08
FR
FR7437188A
patent/FR2250728B1/fr
not_active
Expired
1974-11-11
IT
IT70311/74A
patent/IT1024802B/en
active
1974-11-11
GB
GB4864374A
patent/GB1448316A/en
not_active
Expired
1974-11-11
DK
DK586374A
patent/DK586374A/da
not_active
Application Discontinuation
1974-11-11
SU
SU742078312A
patent/SU722479A3/en
active
1974-11-12
BE
BE150378A
patent/BE822046A/en
not_active
IP Right Cessation
1974-11-12
CH
CH1510374A
patent/CH615411A5/de
not_active
IP Right Cessation
1974-11-12
NL
NL7414766A
patent/NL7414766A/en
not_active
Application Discontinuation
Also Published As
Publication number
Publication date
IT1024802B
(en)
1978-07-20
SU722479A3
(en)
1980-03-15
CH615411A5
(en)
1980-01-31
FR2250728A1
(en)
1975-06-06
BE822046A
(en)
1975-05-12
DE2453639B2
(en)
1977-06-23
FR2250728B1
(en)
1976-12-31
DE2453639A1
(en)
1975-05-15
JPS5337858B2
(en)
1978-10-12
CA1025475A
(en)
1978-01-31
DK586374A
(en)
1975-07-14
JPS5077346A
(en)
1975-06-24
NL7414766A
(en)
1975-05-14
US3989750A
(en)
1976-11-02
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Legal Events
Date
Code
Title
Description
1977-01-13
PS
Patent sealed [section 19, patents act 1949]
1994-12-07
PE20
Patent expired after termination of 20 years
Effective date:
19941110
