Method of acylating amines using N,N'-diacylimidazolone derivatives
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United States of America Patent
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Nov 30, 1999
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N/A
app pub date -
Oct 29, 1998
filing date -
Apr 21, 1998
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Expired
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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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