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:
Oct. 08, 1985
Filed:
Mar. 26, 1984
Applicant:
Inventor:
Donald W Stoutamire, Modesto, CA (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07B / ; C07B / ;
U.S. Cl.
CPC ...
560105 ; 560-9 ; 560 11 ; 560 61 ; 560100 ; 560147 ; 560149 ; 560152 ; 562401 ; 562426 ; 562429 ; 562471 ; 562490 ; 562494 ; 562507 ;
Abstract
Stereoisomerically-enriched esters are prepared by treating a non-symmetrical ketene with a racemic or chiral tertiary-base-substituted alkylcarbinol. Optional hydrolysis of the esters gives the corresponding optically-active carboxylic acids corresponding to the non-symmetrical ketene.