Reaction of <i>N</i>-Monosubstituted Hydrazones with Nitroolefins: A Novel Regioselective Pyrazole Synthesis
作者:Xiaohu Deng、Neelakandha S. Mani
DOI:10.1021/ol061226v
日期:2006.8.1
A novel regioselective synthesis of substituted pyrazoles from N-monosubstituted hydrazones and nitroolefins is described. The reaction is performed in a one-pot manner and the yields range from moderate to excellent. A key nitropyrazolidine intermediate is characterized and a plausible mechanism is proposed.
描述了一种由N-单取代的azo和硝基烯烃进行的区域选择性合成取代的吡唑的新方法。反应以一锅法进行,收率范围从中等到极好。表征了关键的硝基吡唑烷中间体,并提出了可能的机理。