Gold-Catalyzed Cyclization of Diynes: Controlling the Mode of 5-<i>endo</i>versus 6-<i>endo</i>Cyclization-An Experimental and Theoretical Study by Utilizing Diethynylthiophenes
作者:Max M. Hansmann、Svetlana Tšupova、Matthias Rudolph、Frank Rominger、A. Stephen K. Hashmi
DOI:10.1002/chem.201302967
日期:2014.2.17
states could be localized explaining the observed 5‐endo cyclizationmode by classical transition‐state theory. In the case of vinyl and 2,3‐thiophene backbones, the theoretical analysis of the cyclizationmode in the bifurcated cyclization area demonstrated that classical transition‐state theory is no longer valid to explain the high experimentally observed selectivity. Herein, for the first time, the