The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 17, 1982
Filed:
Jun. 26, 1980
Applicant:
Inventors:
Klaus Naumann, Cologne, DE;
Rudolf Rauchschwalbe, Wuppertal, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560124 ; 560219 ; 562401 ; 2041 / ;
Abstract
A substantially pure compound selected from the group consisting of the d-menthyl esters of 1RS-cis-, 1RS-cis/trans-, 1R-cis-, 1S-cis-, 1R-trans- and 1S-trans-3-(2,2-dichloro- and dibromo-vinyl)-2,2-dimethylcyclopropanecarboxylic acid, the 1-menthyl esters of 1RS-cis-, 1RS-trans-, 1RS-cis/trans-, 1R-cis-, 1S-cis-, 1R-trans- and 1S-trans-3-(2,2-dibromo-vinyl)-2,2-dimethyl-cyclopropanecarboxylic acid and the 1-menthyl esters of 1R-trans- and 1S-trans-3-(2,2-dichloro-vinyl)-2,2-dimethyl-cyclopropanecarboxylic acid. The esters are produced by reacting enantiomers of the acids with d- or 1-menthol are selectively crystallizing.