Functionalization of Organotrifluoroborates: Reductive Amination
作者:Gary A. Molander、David J. Cooper
DOI:10.1021/jo800383e
日期:2008.5.1
Herein we report the conversion of aldehyde-containing potassium and tetrabutylammonium organotrifluoroborates to the corresponding amines through reductive amination protocols. Potassium formate facilitated by catalytic palladium acetate, sodium triacetoxyborohydride, and pyridine borane have all served as effective hydride donors, reducing the initially formed imines or iminium ions to provide the corresponding amines.
Condensation Reactions To Form Oxazoline-Substituted Potassium Organotrifluoroborates
作者:Gary A. Molander、Wilma Febo-Ayala、Ludivine Jean-Gérard
DOI:10.1021/ol901395c
日期:2009.9.3
oxazoline-substituted potassium organotrifluoroborates was prepared via the condensation of various potassium formyl-substituted aryl- and heteroaryltrifluoroborates with tosylmethyl isocyanide under basic conditions. The efficient Suzuki−Miyaura cross-coupling of products thus formed to various aryl bromides was achieved in good yields. The method allows the facile preparation of oxazole-containing