A New Convergent Strategy for the Synthesis of Calixarenes via a Triple Annulation of Fischer Carbene Complexes
作者:Vijay Gopalsamuthiram、William D. Wulff
DOI:10.1021/ja0454236
日期:2004.11.1
A new method for the synthesis of unsymmetrical calix[4]arenes is described which involves the reaction of a diyne with a bis-carbene complex of chromium. This synthesis of calixarenes is unique in that it involves the formation of two of the four benzene rings of the calixarene and the macrocyclic ring of the calixarene in the same step. Thus, two of the four benzene rings of the calixarene are identical