Development of complex in catalytic enantioselective 1,3-dipolar cycloaddition reactions of nitrones

The rapid developments of complex in the field of catalytic enantioselective 1,3dipolar cycloaddition reactions which have occurred during the recent years are reported.A series of catalysis has been applied for 1,3dipolar cycloaddition reactions of nitrons with electrondeficient and electronrich alkenes,respectively.In several cases a high degree of control of both the diastereoiosmer and enantioselectivity has been achieved in both DielsAlder reactions and 1,3dipolar cycloaddition reactions.