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:
Mar. 26, 2019
Filed:
Oct. 09, 2017
Applicant:
Dow Agrosciences Llc, Indianapolis, IN (US);
Inventors:
Nakyen Choy, Carmel, IN (US);
Fangzheng Li, Carmel, IN (US);
Assignee:
Dow AgroSciences LLC, Indianapolis, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 51/50 (2006.01); C07C 61/40 (2006.01); C07C 51/487 (2006.01);
U.S. Cl.
CPC ...
C07C 51/50 (2013.01); C07C 51/487 (2013.01); C07C 61/40 (2013.01); C07B 2200/07 (2013.01); C07C 2601/02 (2017.05);
Abstract
The (1R,3R)- or (1S,3S)-enantiomer of 2,2-dichloro-3-(substituted phenyl)cyclopropane-carboxylic acid is prepared in a process involving chemical resolution of a racemic mixture of a trans-2,2-dichloro-3-(substituted phenyl)cyclopropanecarboxylic acid with an enantiomeric amine, isolation of a diastereomeric amine salt and finally treatment of the salt with an acid.