Bulletin of the Chemical Society of Japan p. 3586 - 3589 (1982)
Update date:2022-08-03
Topics:
Mitsuhashi, Keiryo
Takahashi, Kazuyuki
Kawahara, Takeo
Ikeru, Yoshimitsu
Tanaka, Kiyoshi
The reactions of 4,5-dicyanoimidazoles with methyl isocyanate gave 7-cyano-1-imino-2-methyl-2,3-dihydro-1H-imidazo<3,4-c>imidazol-3-oens (2), while the similar reactions with phenyl isocyanate resulted in the formation of the tricyclic imidazoles, 11-imino-6,10-diphenyl-2,4,6,8,10-pentaazatricyclo<5.4.1.04,12>dodeca-1(12),2,7-triene-5,9-diones (3) and the same type of the tricyclic imidazoles 4 were obtained by carbamoylation of 2 with phenyl isocyanate.The reactions of 2, 3, and 4 with amines were further investigated.
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Doi:10.1016/j.bmcl.2008.05.106
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