Radical Heteroarylalkylation of Alkenes via
<scp>Three‐Component Docking‐Migration</scp>
Thioetherification Cascade
作者:Tao Niu、Jige Liu、Xinxin Wu、Chen Zhu
DOI:10.1002/cjoc.202000088
日期:2020.8
A novel, rational‐designed approach to access various heteroaryl‐substituted alkyl thioethers was developed via docking‐migration cascade process. By utilizing three components involving alkene, dual‐function reagent, and thioetherificating reagent, radical heteroarylalkylation of alkenes followed by thiolation of the alkyl radical intermediates proceeded smoothly, manifesting well compatibility of
Enantioselective hydrogen atom transfer to α-sulfonyl radicals controlled by selective coordination of a chiral Lewis acid to an enantiotopic sulfonyl oxygen
Enantioselective hydrogen atom transfer to a-sulfonyl radicals generated from the alkyl radical addition to 2-propenyl and 1-phenylethenyl sulfones in the presence of chiral Lewis acids affords products with high enantioselectivity. The stereochemical course is discussed with the transition states involving selective coordination of a chiral Lewis acid to an enantiotopic sulfonyl oxygen. (C) 2003 Elsevier Ltd. All rights reserved.