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:
Apr. 15, 1986
Filed:
Nov. 14, 1983
Applicant:
Inventors:
Donald W Stoutamire, Modesto, CA (US);
Charles H Tieman, Modesto, CA (US);
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07D / ;
U.S. Cl.
CPC ...
558406 ; 546301 ; 558407 ; 558444 ;
Abstract
Stereoisomerically-enriched cyanomethyl esters are prepared by treating a non-symmetrical ketene with a racemic or optically-active alpha-hydroxynitrile in the absence of a catalyst or in the presence of an achiral tertiary amine catalyst.