作者:BOUCHET P.、 JONCHERAY G.、 JACQUIER R.、 ELGUERO J.
DOI:——
日期:——
JPH06130433A
申请人:——
公开号:JPH06130433A
公开(公告)日:1994-05-13
Parrini, Annali di Chimica, 1957, vol. 47, p. 929,949
作者:Parrini
DOI:——
日期:——
Reactions of pyrazoles and pyrazolium salts with complex metal hydrides and organometallic reagents. Synthesis of pyrazolines and pyrazolidines
作者:Purificación Cuadrado、Ana M. González-Nogal、Senén Martínez
DOI:10.1016/s0040-4020(97)00514-0
日期:1997.6
2-Pyrazolin-4-oximes have been synthesized by reaction of 4-nitroso- and 4-nitropyrazoles with complex metal hydrides and organometallic reagents. Furthermore, 4-nitropyrazolium tetrafluoroborates are reactive substrates towards organolithium and Grignard compounds leading to new and highly substituted 4-nitro-3-pyrazolines and 4-nitropyrazolidines. The formation of 3-pyrazolines is regioselective