Selective Synthesis of Tetrasubstituted Olefins by Copper-Mediated Acetoxythiolation of Internal Alkynes: Scope and Mechanistic Studies
作者:Pedro Villuendas、Sara Ruiz、Pietro Vidossich、Agustí Lledós、Esteban P. Urriolabeitia
DOI:10.1002/chem.201802546
日期:2018.9.6
The Cu‐mediated synthesis of tetrasubstituted olefins by the addition of an acetate group and a thiolate to an unactivated internal alkyne is described. The reaction is fully stereoselective, because only the Ealkene is obtained. If the alkyne is asymmetric, the reaction also shows a very high degree of regioselectivity. The mechanism of the reaction is elucidated by DFT methods, which show that it