A Simple Synthesis of Substituted 2-Imino-1,2-dihydropyrimidines From 1-Azabutadienes via Diazasilines

Article abstract of DOI:10.1055/s-1987-33429

1,2-Dihydro-1,3,2-diazasilines, formed on reaction of 4-amino-1-azabutadienes (3-amino-2-propenylideneamines) with dichlorodiphenyl- or dichlorodimethylsilane, react with aliphatic and aromatic isocyanates to give high yields of substituted 2-imino-1,2-di