An Efficient Synthesis of 2-Diazo-2-(trimethylsilyl)ethanols and Their Application to Pyrazole Synthesis
作者:Toyohiko Aoyama、Yoshiyuki Hari、Susumu Tsuchida、Ryosuke Sone
DOI:10.1055/s-2007-990817
日期:2007.11
Reaction of diazo(trimethylsilyl)methylmagnesium bromide with aldehydes or ketones gave 2-diazo-2-(trimethylsilyl)ethanols, which were applied to the synthesis of di- and trisubstituted pyrazoles via [3+2] cycloaddition reaction with ethyl propiolate or dimethyl acetylenedicarboxylate.
重氮(三甲基甲硅烷基)甲基溴化镁与醛或酮反应得到 2-重氮-2-(三甲基甲硅烷基)乙醇,将其用于与丙炔酸乙酯或乙炔二甲酸二甲酯通过 [3+2] 环加成反应合成二取代和三取代吡唑.