Gold(I)-Catalyzed Cycloisomerization of Enynes Containing Cyclopropenes
作者:Changkun Li、Yi Zeng、Hang Zhang、Jiajie Feng、Yan Zhang、Jianbo Wang
DOI:10.1002/anie.201002673
日期:2010.8.23
Goldenyne: Gold‐catalyzed cycloisomerization reactions of propargyl cyclopropenes afford benzene derivatives in a highly efficient manner. The reaction either proceeds through a mechanism with or without double and triple bond cleavage, depending on the substituents (see scheme).
1,3-Cationic Alkylidene Migration of Nonclassical Carbocation: A Density Functional Theory Study on Gold(I)-Catalyzed Cycloisomerization of 1,5-Enynes Containing Cyclopropene Moiety
作者:Qinghai Zhou、Yuxue Li
DOI:10.1021/ja410734e
日期:2014.1.29
For quite a long time, nonclassical carbocations have only been regarded as special intermediates with limited cases in solvolysis reactions. However, the present work shows that in common reaction, typical nonclassical carbocations may be involved in and have significant effects on the reaction mechanisms. In this work, DFT studies have been performed on the mechanism of gold(I)-catalyzed cycloisomerization