Palladium-catalyzed Suzuki cross-coupling of aryl halides with aryl boronic acids in the presence of glucosamine-based phosphines
作者:Robert Kolodziuk、Alexandra Penciu、Mustapha Tollabi、Eric Framery、Catherine Goux-Henry、Alexander Iourtchenko、Denis Sinou
DOI:10.1016/s0022-328x(03)00636-3
日期:2003.12
Carbohydrate-substituted phosphines are easily obtained in quite good yields by coupling of protected or non-protected D-glucosamine with the corresponding diphenylphosphino acid. These neutral ligands, in association with palladium acetate, are very active catalysts in the Suzuki cross-coupling reaction. The polyhydroxy phosphines are more active than the peracetylated phosphines. The process tolerates electron-rich as well as electron-poor substituents. Excellent turnovers, up to 97 000 are observed. (C) 2003 Elsevier Science B.V. All rights reserved.