VAQUERO J. J.; FUENTES L.; DEL CASTILLO J. C.; PEREZ M. I.; GARCIA J. L.;+, SYNTHESIS,(1987) N 1, 33-35
作者:VAQUERO J. J.、 FUENTES L.、 DEL CASTILLO J. C.、 PEREZ M. I.、 GARCIA J. L.、+
DOI:——
日期:——
The Reactions of Benzylmalononitriles with Hydrazine and Hydroxylamine. Synthesis of Pyrazoles, Isoxazoles, and Pyrazolo[1,5-<i>a</i>]-pyrimidine Derivatives
作者:Juan J. Vaquero、Luis Fuentes、Juan C. Del Castillo、María I. Pérez、José L. García、José L. Soto
DOI:10.1055/s-1987-27831
日期:——
Benzylmalononitriles react with hydrazine or hydroxylamine to give 4-substituted 3,5-diaminopyrazoles or isoxazoles, respectively. Pyrazolo[1,5-a]pyrimidine derivatives are prepared by reaction of these pyrazoles with some 2,3-disubstituted propenenitriles (including benzylidenemalononitrile) under mild conditions.