Photoinduced rearrangement of vinyl tosylates to β-ketosulfones
作者:Lili Xie、Xiaomeng Zhen、Shuping Huang、Xiaolong Su、Mai Lin、Yi Li
DOI:10.1039/c7gc01467h
日期:——
We developed a photoinduced radical fragmentation and rearrangement of vinyl tosylates that enables efficient formation of -ketosulfones. The process is based on photoinitiated homolysis of vinyl tosylate to release sulfinyl radical from the tosyl group of and subsequent addition of sulfinyl radical to another vinyl tosylate form the desired -ketosulfones. This simple protocol features board scope
functionalized bicyclo[1.1.1]pentanes (BCPs) is of high synthetic value, as they are frequently harnessed as bioisosteres of 1,3-disubstituted benzene rings, alkynes, and tert-butyl groups in medicinal chemistry. Herein, we disclose a practical radical-mediated carbosulfonylation of propellane for the synthesis of sulfonyl β-keto-substituted BCPs by using vinyl sulfonates as dual-function reagent. This