Metal-free blue light-mediated [2,3]-sigmatropic rearrangement reactions of tosylhydrazones and sulfides are reported herein. This strategy shows great enhancement compared to the traditional methods because of stable starting materials and mild reaction conditions. In this report, we have developed the Doyle-Kirmse reaction and Sommelet-Hauser reaction with simple operation, high yields and broad
Catalytic Sommelet-Hauser rearrangement is reported. The Rh(II)-catalyzed reaction of aryldiazoacetates with ethyl benzylthioacetate affords Sommelet-Hauser rearrangement products in good to excellent yields. This reaction provides a reliable and efficient way to introduce a substituent to the ortho position of arylacetates.