Conformationally restricted pyrrolidines by intramolecular [2+2] photocycloaddition reactions
作者:Diego A. Fort、Thomas J. Woltering、Matthias Nettekoven、Henner Knust、Thorsten Bach
DOI:10.1039/c3cc40757h
日期:——
Intramolecular [2+2] photocycloaddition reactions of diversely substituted N-Boc protected 4-(allylaminomethyl)-2(5H)-furanones resulted in rigid products (53–75%) with three spatially defined positions for further functionalisation.
Regio- and Enantioselective Bromocyclization of Difluoroalkenes as a Strategy to Access Tetrasubstituted Difluoromethylene-Containing Stereocenters
作者:Edward Miller、Suhong Kim、Katarina Gibson、Jeffrey S. Derrick、F. Dean Toste
DOI:10.1021/jacs.0c02331
日期:2020.5.13
Difluoromethylene-containing compounds have attracted substantial research interest over the past decades for their ability to mimic biological functions of traditional functional groups while providing a wide variety of pharmacological benefits bestowed by the C-F bond. We report a novel strategy to access RCF2Br-containing heterocycles by regio- and enantioselective bromocyclization of difluoroalkenes