Bipyridine Facilitates Regioselective Dimerization of Alkynes in the Absence of Transition Metal. Issue 18 (22nd June 2017) - Midya, Ganesh Chandra
Abstract: We herein present a transition metal free protocol for the dimerization of terminal aryl alkynes to prepare enyne derivatives using potassium tert ‐butoxide in the presence of catalytic amount of 2, 2′‐bipyridine. The reaction is compatible with a wide range of substrates resulting in high to moderate yields of the corresponding head‐to‐head dimers with E ‐selectivity. Abstract : We herein present a transition metal free protocol for the dimerization of terminal aryl alkynes to prepare enyne derivatives using potassium tert ‐butoxide in the presence of catalytic amount of bipyridine. The reaction is compatible with a wide range of substrates resulting in high to moderate yields of the corresponding head‐to‐head dimers with E ‐selectivity.