Regioselective Pd-Catalyzed Aerobic Aza-Wacker Cyclization for Preparation of Isoindolinones and Isoquinolin-1(2H)-ones
摘要:
A switchable regioselective intramolecular aerobic aza-Wacker cyclization catalyzed by palladium is presented. Isolndollnones or isoquinolin1(2H)-ones could be prepared selectively from the same substrates using different catalysts. The type and steric hindrance of the ligands may be the variables most significant for regiocontrol.
Regioselective Pd-Catalyzed Aerobic Aza-Wacker Cyclization for Preparation of Isoindolinones and Isoquinolin-1(2H)-ones
摘要:
A switchable regioselective intramolecular aerobic aza-Wacker cyclization catalyzed by palladium is presented. Isolndollnones or isoquinolin1(2H)-ones could be prepared selectively from the same substrates using different catalysts. The type and steric hindrance of the ligands may be the variables most significant for regiocontrol.
Asymmetric Palladium-Catalyzed Directed Intermolecular Fluoroarylation of Styrenes
作者:Eric P. A. Talbot、Talita de A. Fernandes、Jeffrey M. McKenna、F. Dean Toste
DOI:10.1021/ja412881j
日期:2014.3.19
A mild catalytic asymmetric direct fluoro-arylation of styrenes has been developed. The palladium-catalyzed three-component coupling of Selectfluor, a styrene and a boronic acid, provides chiral monofluorinated compounds in good yield and in high enantiomeric excess. A mechanism proceeding through a Pd(IV)-fluoride intermediate is proposed for the transformation and synthesis of an sp3 C–F bond.