The synthesis of a series of 2,3-diarylbenzo[b]furans starting from 1,2-diarylethanones and 1,2-dibromoarenes proceeds by means of both homogeneous and polymer-anchored palladium catalysts. This tandem process can be effectively halted at the C-arylation step, thus providing key o-bromoarylated deoxybenzoin intermediates in good yields. The efficient oxidative coupling leading to benzo[b]phenanthro[9
A new synthetic strategy for the synthesis of bioactive stilbene dimers. A direct synthesis of amurensin H
作者:George A. Kraus、Vinayak Gupta
DOI:10.1016/j.tetlet.2009.10.040
日期:2009.12
2,3-Diarylbenzofurans are efficiently generated by the cyclization of ortho-benzyloxybenzophenones using the hindered phosphazene base P-4-t-Bu. Published by Elsevier Ltd.