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A facile synthesis of N,N′-disubstituted ureas from amide and amine by using N-bromophthalimide (NBP) and silveracetate in one pot

✍ Scribed by Min-Soo Park; Chang-Uk Choi


Book ID
112961560
Publisher
Springer
Year
1994
Tongue
English
Weight
286 KB
Volume
17
Category
Article
ISSN
0253-6269

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## Abstract The iminium intermediate formed by the reaction of a secondary amine with acetaldehyde was reacted by (__N__‐isocyanimino) triphenylphosphorane in the presence of an electron‐poor (__E__)‐cinnamic acid derivative to give the corresponding iminophosphorane intermediate, whose intramolecu