Efficient Preparation of the Isoindoline Frameworkvia a Six Component, Tandem Double A3-Coupling and [2+2+2] Cycloaddition Reaction
作者:E. Ryan Bonfield、Chao-Jun Li
DOI:10.1002/adsc.200700500
日期:2008.2.22
The preparation of tetrasubstituted isoindolines from three alkyne units, two aldehyde units and a primary amine via three consecutive reactions, two aldehyde-amine-alkyne couplings (A3-couplings) and a final [2+2+2] cycloaddition, in a single synthetic operation, is described. The A3-couplings are catalyzed by copper bromide and the cycloaddition is catalyzed by Wilkinson’s catalyst. It was found