Palladium-Catalyzed Borylation of Aryl and Heteroaryl Halides Utilizing Tetrakis(dimethylamino)diboron: One Step Greener
作者:Gary A. Molander、Sarah L. J. Trice、Steven M. Kennedy
DOI:10.1021/ol302124j
日期:2012.9.21
borylating agent, tetrakis(dimethylamino)diboron [(Me2N)2B–B(NMe2)2], is reported. The method is complementary to the previously reported method utilizing bis-boronic acid (BBA) in that certain substrates perform better under one set of optimized reaction conditions than the other. Because tetrakis(dimethylamino)diboron is the synthetic precursor to both BBA and bis(pinacolato)diboron (B2Pin2), the new
A modified procedure for the palladium catalyzed borylation/Suzuki-Miyaura cross-coupling of aryl and heteroaryl halides utilizing bis-boronic acid
作者:Gary A. Molander、Sarah L.J. Trice、Brittany Tschaen
DOI:10.1016/j.tet.2015.04.026
日期:2015.9
A modified Pd-catalyzed method of forming aryl- and heteroarylboron species and a two-step, one-pot borylation/Suzuki-Miyaura cross coupling using the atom economical tetrahydroxydiboron (bis-boronic acid, BBA) is reported. By using ethylene glycol as an additive, the new method results in increased yields, lower BBA loading, faster reaction times, and a broader reaction scope, including previously