Regioselective Cyclizations Utilizing a Gold-Catalyzed [3,3] Propargyl Ester Rearrangement
作者:John W. Cran、Marie E. Krafft
DOI:10.1002/anie.201203923
日期:2012.9.10
Switch‐Au‐roo: A new strategy for the regioselective synthesis of unsaturated carbocycles by chemoselective activation of a Rauhut–Currier zwitterion surrogate, formed from the Au‐catalyzed [3,3] sigmatropic rearrangement of propargylic esters, has been achieved. By reversing the regiochemistry of the propargyl ester the synthesis of either the endo‐ or exocyclic enones is feasible.
Switch-Au-roo:一种通过化学选择性活化Rauhut-Currier两性离子替代基团进行区域选择性合成不饱和碳环的新策略,该替代基团是由Au催化的[3,3]σ炔丙基酯重排形成的。通过逆转炔丙基酯的区域化学反应,可以合成内环或外环烯酮。