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. 10, 1999
Filed:
May. 22, 1997
Applicant:
Inventors:
Anne Pautard-Cooper, Tarpon Springs, FL (US);
Philip Franklin Sims, Cherryville, NC (US);
James Anthony Schwindeman, Lincolnton, NC (US);
Assignee:
FMC Corporation, Philadelphia, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
546220 ; 546240 ;
Abstract
The present invention provides improved processes for the chemical reduction of imide esters to the corresponding amino alcohols with yields greater than 76%. A specific range of ethereal to hydrocarbon solvent ratio is used. The improved yield can be achieved using as a reducing agent lithium aluminum hydride or the less costly sodium aluminum hydride in combination with an additive such as lithium chloride.