An Asymmetric Aerobic Aza-Wacker-Type Cyclization: Synthesis of Isoindolinones Bearing Tetrasubstituted Carbon Stereocenters
作者:Guoqiang Yang、Chaoren Shen、Wanbin Zhang
DOI:10.1002/anie.201203693
日期:2012.9.3
It's all in the solvent: An enantioselective variant of an aza‐Wacker‐type cyclization that gives isoindolinones containing tetrasubstitutedcarbon centers α to the nitrogen atom has been developed (see scheme; tfa=trifluoroacetate). The use of a highly coordinating solvent is crucial for the activity of the catalyst and the stereoselectivity the reaction (up to 99 % ee).