Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1998-10-29
1999-11-30
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
5483067, 5483094, 5483071, C07B 4106
Patent
active
059945575
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).
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Cha Ki Seok
Kim Choong Sup
Higel Floyd D.
Korea Institute of Science and Technology
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