Selective synthesis of 4-(sulfonyl)-methyl-1H-pyrazoles and (E)-4,5-dihydro-1H-pyrazoles from N-allenic sulfonylhydrazones.

نویسندگان

  • Yu Zhu
  • Jun-Jie Hong
  • Yun-Bin Zhou
  • Yu-Wei Xiao
  • Min Lin
  • Zhuang-Ping Zhan
چکیده

Selective synthesis of 4-(sulfonyl)-methyl-1H-pyrazoles and (E)-4,5-dihydro-1H-pyrazoles from N-allenic sulfonylhydrazones with sulfonyl group migrations has been developed. A key feature of these reactions is that the migrations of the sulfonyl groups to different positions can be controlled by changing the Lewis acids.

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عنوان ژورنال:
  • Organic & biomolecular chemistry

دوره 12 23  شماره 

صفحات  -

تاریخ انتشار 2014