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:
Nov. 30, 1999
Filed:
Oct. 29, 1998
Choong Sup Kim, Seongnam, KR;
Ki Seok Cha, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
The present invention provides a method of acylating organic amines using N,N'-diacylimidazolone derivatives represented by the general formula I as follows: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different, which are selected from the group consisting of methyl, ethyl, straight or substituted aliphatic chain of C.sub.3 -C.sub.19, phenyl, heterocyclic groups, alkoxy and other organic acid substituting groups; and R.sub.3 and R.sub.4 are the same or different, which are selected from the group consisting hydrogen, methyl or ethyl, phenyl, substituted phenyl and alkoxycarbonyl, or wherein R.sub.3 and R.sub.4 form a R-substituted benzene ring having the following structure together with a carbon atom where R.sub.3 and R.sub.4 are bonded to: ##STR2## (wherein R is hydrogen, carboxyl or sulfonic groups).