Catalyst-Directed Chemoselective Double Amination of Bromo-chloro(hetero)arenes: A Synthetic Route toward Advanced Amino-aniline Intermediates
作者:Alexandre A. Mikhailine、Gabriela A. Grasa Mannino、Thomas J. Colacot
DOI:10.1021/acs.orglett.8b00646
日期:2018.4.20
(APIs). Site (Cl vs Br on electrophile) and nucleophile (amine vs imine) selectivity is dictated by the catalyst employed. A Pd-crotyl(t-BuXPhos) precatalyst selectively coupled the Ar–Br of the polyhaloarene with benzophenone imine, even in the presence of a secondaryamine, while Pd-based RuPhos or (BINAP)Pd(allyl)Cl coupled the Ar–Cl site with secondaryamines.