作者:Huang, Huashan、Xu, Liuhui、Zhang, Chunmei、Cheng, Changwu、Chai, Zhi、Yan, Hong、Chen, Fen-Er
DOI:10.1021/acs.orglett.4c01391
日期:——
The present Letter demonstrates a photoswitched stereodivergent synthesis of allylic sulfones from sodium sulfinates, triphenylvinylphosphonium chloride, and (hetero)aromatic aldehydes in a single step. Mechanistically, cis-allylic sulfones, generated from the unstabilized ylide intermediates and aldehydes in situ, could be finally converted to trans-allylic sulfones via photochemical isomerization
本信演示了从亚磺酸钠、三苯基乙烯基氯化鏻和(杂)芳香醛一步中光开关立体发散合成烯丙基砜。从机理上讲,由不稳定的叶立德中间体和醛原位生成的顺式烯丙基砜可以在催化量的双(2-噻吩基)酮存在下通过光化学异构化最终转化为反式烯丙基砜。