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:
Jun. 02, 1998
Filed:
Feb. 25, 1997
Elie Abushanab, Peacedale, RI (US);
Palle VP. Pragnacharyulu, Bridgton, MO (US);
Abstract
A process for the production of a compound of the formula: ##STR1## wherein R.sub.1 is hydrogen, alkyl, C.sub.1 -C.sub.16 substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyls, alkenyl, substituted alkenyl, alkynyl, substituted alkynyl, cyano, carboxy, carboxy esters, carboxamido, or N-mono substituted and N,N-disubstituted carboxamido with alkyl, aralkyl or aryl groups; R.sub.2 is hydrogen, alkyl C.sub.1 -C.sub.16 substituted alkyl, aryl, substituted aryl, aralkyl, substituted aralkyls, alkenyl, substituted alkenyl, alkynyl or substituted alkynyl; R.sub.3 is alkyl C.sub.2 -C.sub.6, branched alkyl, aryl C.sub.2 -C.sub.6 or substituted aryl and R.sub.4 is halogen or H. A condensation reaction is effected between compounds of the formulae: ##STR2## to form a novel compound of the formula: ##STR3## Compound (2) is acylated with a compound of the formula: