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Novel synthesis of N,N′-dialkyl cyclic ureas using sulfur-assisted carbonylation and oxidation

✍ Scribed by Takumi Mizuno; Takeo Nakai; Masatoshi Mihara

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
119 KB
Volume
20
Category
Article
ISSN
1042-7163

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✦ Synopsis

The first example of cyclic urea synthesis from secondary amines by the use of sulfurassisted carbonylation and oxidation was established. By combined sulfur-assisted carbonylation of secondary α,ω-diamines under an ambient pressure of carbon monoxide at 20 • C with oxidation by molecular oxygen (0.1 MPa, 20 • C), a facile synthetic method for N,N -dialkyl cyclic ureas including 1,3-dimethyl-2imidazolidinone was developed.

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