Copper-Catalyzed Construction of Amide Linkages via Coupling between Unactivated Acids and Amines
作者:Sukalyan Bhadra、Ajijur Rahaman
DOI:10.1055/a-2145-5986
日期:2023.12
Traditional amide linkage forming reactions by the coupling between an acid and an amine rely primarily on triggering the carboxylicacid counterpart with (over)stoichiometric activating agent(s) and generate unacceptable quantity of nondisposable waste, leading to poor atom economy. Herein, we report an efficient catalytic amide synthesis that proceeds through the in situactivation of the amine counterpart
Chemoselective amide reductions by heteroleptic fluoroaryl boron Lewis acids
作者:Michael T. Peruzzi、Qiong Qiong Mei、Stephen J. Lee、Michel R. Gagné
DOI:10.1039/c8cc01863d
日期:——
The heteroleptic borane catalyst (C6F5)2B(CH2CH2CH2)BPin is found to hydrosilylatively reduce amides under mild conditions. Simple tertiary amides can be reduced using Me2EtSiH, whereas tertiary benzamides required a more reactive secondary silane, Et2SiH2, for efficient reduction. The catalytic system described exhibits exceptional chemoselectivity in the reduction of oligoamides and tolerates functionalities