Db. Nilov et al., AN UNEXPECTED SYNTHESIS OF 7,8-POLYMETHYLENEIMIDAZO-1,3,2-DIAZAPHOSPHORINES - HETEROANALOGUES OF MERCAPTOPURINE DERIVATIVES, Mendeleev communications, (2), 1995, pp. 67-67
A new synthesis of 7,8-polymethyleneimidazodiazaphosphorines, involvin
g the interaction of cyclic 1-carbamoylmethy-2-cyanamidines with phosp
horus pentasulfide in the presence of pyridine, is described.