作者:Ronald J. Quinn、Peter J. Scammells
DOI:10.1016/s0040-4039(00)93603-7
日期:1991.11
4-Amino-1-phenyl-5H-pyrazolo[3,4-d]pyrimidin-6-one (5a) was synthesized in 68% yield in a one pot reaction involving the condensation of 5-amino-1-phenylprazole-4-carbonitrile with benzoyl isocyanate followed by an annulation with ammonia.