Synthesis of Benzannulated [6,6]-Spiroketals by a One-Pot Carbonylative Sonogashira Coupling/Double Annulation Reaction
作者:Kuirong Xiang、Pei Tong、Baorun Yan、Lingling Long、Chunbo Zhao、Yuan Zhang、Ying Li
DOI:10.1021/acs.orglett.8b03586
日期:2019.1.18
A one-pot Pd-catalyzed carbonylative Sonogashira coupling in tandem with double annulation reaction to synthesize benzannulated [6,6]-spiroketals from o-iodophenols and terminal alkynols or alkynyl phenols was achieved. The protocol provides straightforward and facile access to benzannulated [6,6]-spiroketals in moderate to good yields and excellent diastereoselectivities under balloon pressure of
实现了单锅钯催化的羰基化Sonogashira偶联与双环反应,从邻碘苯酚和末端炔醇或炔基酚合成苯并[6,6]-螺缩酮。该协议提供了在中度到良好的产率和在室温下在CO的球囊压力下出色的非对映选择性的简便易行的途径,可接近苯环化的[6,6]-螺酮。