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:
Jan. 08, 1985
Filed:
Apr. 25, 1983
Applicant:
Inventor:
Lorenz Heiss, Hofheim am Taunus, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2604537 ;
Abstract
New alkyl (4-halomethyl)iminobenzoates of the formula ##STR1## and their HCl or HBr salts, R denoting C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxyethyl and X denoting Cl or Br. These compounds are prepared by reaction of p-cyanobenzyl chloride or p-cyanobenzyl bromide with a C.sub.1 -C.sub.4 -alcohol or C.sub.1 -C.sub.4 -alkoxyethanol in the presence of hydrogen chloride or bromide. The new imines serve as intermediate products, inter alia for the preparation of optical brighteners of the bisbenzoxazolylstilbene class.