Cross-Coupling of Mesylated Phenol Derivatives with Potassium Ammonio- and Amidomethyltrifluoroborates
作者:Gary A. Molander、Floriane Beaumard
DOI:10.1021/ol200128y
日期:2011.3.4
A large array of aryl and heteroaryl mesylates have been successfully employed as electrophiles in a Csp(2)-Csp(3) Suzuki-Miyaura cross-coupling with potassium ammonio- and amidomethyltrifluoroborates to afford the corresponding products in high yields.
Direct amide bond formation from carboxylic acids and amines using activated alumina balls as a new, convenient, clean, reusable and low cost heterogeneous catalyst
For the first time, we have usedactivated alumina balls (3–5 mm diameter) for amide synthesis from carboxylicacids (unactivated) and amines (unactivated) under neat reaction conditions that produce no toxic by-products and has the advantages of being low-cost, easily available, heterogeneous, reusable and environmentally benign with no troublesome/hazardous disposal of the catalyst.