Reactions of 4,5-Dicyanoimidazoles with Isocyanates. Novel Formation of the Condensed Tricyclic Imidazoles
作者:Keiryo Mitsuhashi、Kazuyuki Takahashi、Takeo Kawahara、Yoshimitsu Ikeru、Kiyoshi Tanaka
DOI:10.1246/bcsj.55.3586
日期:1982.11
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-ones (2), while the similar reactions with phenyl isocyanate resulted in the formation of the tricyclic imidazoles, 1 1-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
4,5-二氰基咪唑与异氰酸甲酯反应生成 7-cyano-1-imino-2-methyl-2,3-dihydro-1H-imidazo[3,4-c]imidazol-3-ones (2), 而与异氰酸苯酯的类似反应导致形成三环咪唑,1 1-imino-6,10-diphenyl-2,4,6,8,10-pentaazatricyclo[5.4.1.04,12]dodeca-1(12) ,2,7-三烯-5,9-二酮(3)和同类型的三环咪唑4是通过2与异氰酸苯酯的氨基甲酰化得到的。进一步研究了 2、3 和 4 与胺的反应。