α-Pyrazolyl-Alkylphosphonates. Part. II<sup>1</sup>: A simple and Efficient Synthesis of Diethyl 1-(pyrazol-4-yl)-alkylphosphonates
作者:Didier Fouqué、Elie About-Jaudet、Noël Collignon
DOI:10.1080/00397919508013868
日期:1995.11
alkylphosphonates (3) were conveniently prepared using two complementary inexpensive strategies, and were reacted with hydrazine, methylhydrazine or phenylhydrazine giving regioselectively new diethyl 1-(pyrazol-4-yl)-alkylphosphonates (4), isolated in high yields.