Highly Efficient Access to Bi- and Tricyclic Ketals through Gold-Catalyzed Tandem Reactions of 4-Acyl-1,6-diynes
作者:Jia Meng、Yu-Long Zhao、Chuan-Qing Ren、You Li、Zhu Li、Qun Liu
DOI:10.1002/chem.200802304
日期:2009.2.9
Single step: Fused bicyclic and bridged tricyclic ketals were synthesized in a single step from the reactions of easily available 4‐acyl‐1,6‐diynes with H2O and alkanols (see scheme). The highly efficient AuCl3‐catalyzed multicomponent domino reactions, involving five CO bond formations, can proceed in a highly regio‐ and diastereoselective manner at room temperature under air and lead to structures
单一步骤:融合的双环和桥联三环缩酮是由易于获得的4-酰基-1,6-二炔与H 2 O和链烷醇的反应在一个步骤中合成的(请参见方案)。高效的AuCl 3催化的多组分多米诺反应,涉及五个CO键的形成,可以在室温下在空气中以高度区域和非对映选择性的方式进行,并通过原子经济中的简单起始原料导致具有高分子复杂性的结构道路。