Anionic [3,3], [2,3] and [1,2] rearrangements of aliphatic and aromatic acyl hydrazines with NN bond cleavage
作者:Yasuyuki Endo、Takuya Uchida、Koichi Shudo
DOI:10.1016/s0040-4039(97)00320-1
日期:1997.3
N-Acyl-N′-phenylhydrazines rearrange under basic conditions to afford o-aminophenyl-acetamides. This reaction can be rationalized in terms of [3,3] sigmatropic shifts of enolized intermediates. The Sommelet-Hauser-type and Stevens-type rearrangements of both aromatic and aliphatic acylhydrazines compete with the [3,3] rearrangement.
N-酰基-N'-苯基肼在碱性条件下重排,得到邻氨基苯基乙酰胺。可以根据烯醇化中间体的[3,3]σ位移合理化此反应。芳香族和脂肪族酰基肼的Sommelet-Hauser型和Stevens型重排与[3,3]重排竞争。