Access to 2-(Het)aryl and 2-Styryl Benzoxazoles via Palladium-Catalyzed Aminocarbonylation of Aryl and Vinyl Bromides
作者:Karoline T. Neumann、Anders T. Lindhardt、Benny Bang-Andersen、Troels Skrydstrup
DOI:10.1021/acs.orglett.5b00642
日期:2015.5.1
procedure for the synthesis of either 2-(hetero)aryl or 2-styryl benzoxazoles is reported, starting from aryl and vinyl bromides, respectively, involving an initial aminocarbonylation with 2-aminophenols as nucleophiles followed by an acid mediated ring closure to generate the heterocycle. The methodology displays a broad substrate scope in moderate to excellent yields and can be exploited for 13C-isotope