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:
May. 29, 1990
Filed:
Dec. 19, 1986
Applicant:
Inventors:
Mark C Cesa, South Euclid, OH (US);
Robert A Dubbert, Solon, OH (US);
James D Burrington, Richmond Heights, OH (US);
Assignee:
The Standard Oil Company, Cleveland, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
562443 ; 560 16 ; 560 40 ; 560 41 ; 560153 ; 560164 ; 560170 ; 560171 ; 548344 ; 548479 ; 548533 ; 548535 ; 562445 ; 562446 ; 562493 ; 562557 ; 562559 ; 562561 ; 562563 ; 562567 ; 562571 ; 562573 ; 562575 ; 562590 ; 562601 ;
Abstract
In the process of hydrocarboxylating an .alpha.-enamide with CO and H.sub.2 O or an organic hydroxyl compound to produce an N-acyl-.alpha.-amino acid or ester, respectively, the improvement comprising using as the .alpha.-enamide reactant, an .alpha.-enamide which has a chiral center that is essentially all L or D, thereby producing a reaction mixture containing diastereomeric N-acyl-.alpha.-amino acids or esters having two chiral centers, said mixture having essentially no enantiomeric pairs.