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:
Feb. 19, 1991
Filed:
Jan. 29, 1990
Applicant:
Inventor:
Barbara C Stahly, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
558332 ; 558351 ; 558352 ;
Abstract
1-Cyano-1-(4-alkylphenyl)alkenes having utility as chemical intermediates, especially in the preparation of ibuprofen and related pharmaceuticals, are prepared by reacting an alkylbenzene with an alkali metal cyanide and an acid halide in the presence of aluminum chloride.