Synthesis of α-Ketoamides from Aryl Methyl Ketones and N,N-Dimethylformamide via Copper-Catalyzed Aerobic Oxidative Coupling
作者:Qiuling Song、Mingxin Zhou
DOI:10.1055/s-0033-1339109
日期:——
Abstract A copper-catalyzedaerobicoxidativecoupling of aryl methyl ketones with N,N-dimethylformamide was developed, which afforded α-ketoamides by a sequence of dioxygen activation, C–H bond functionalization, and amide formation with N,N-dimethylformamide as the nitrogen source. Molecular oxygen was found to play a crucial role in this transformation. A copper-catalyzedaerobicoxidativecoupling of aryl
Direct use of formamides as amino group sources via C–N bond cleavage: a catalytic oxidative synthesis of α-ketoamides from acetophenones and formamides under metal-free conditions
作者:Qiong Zhao、Tao Miao、Xiaobin Zhang、Wei Zhou、Lei Wang
DOI:10.1039/c3ob27433k
日期:——
An efficient and direct use of formamides as amino group sources for the synthesis of α-ketoamides was developed under metal-free conditions. The reaction was based on the oxidative coupling of acetophenones with formamides and generated the desired products in good yields in the presence of t-BuOOH/I2/PhCO2H.
Cu(ii)-catalyzed decarboxylative acylation of acyl C–H of formamides with α-oxocarboxylic acids leading to α-ketoamides
作者:Dengke Li、Min Wang、Jie Liu、Qiong Zhao、Lei Wang
DOI:10.1039/c3cc41188e
日期:——
CuBr2-catalyzed decarboxylative acylation of the acyl CâH of N-monosubstituted and N,N-disubstituted formamides with α-oxocarboxylic acids leading to α-ketoamides was developed, which generated the corresponding products in good yields.
The syntheses of α-ketoamides via<sup>n</sup>Bu<sub>4</sub>NI-catalyzed multiple sp<sup>3</sup>C–H bond oxidation of ethylarenes and sequential coupling with dialkylformamides
作者:Bingnan Du、Bo Jin、Peipei Sun
DOI:10.1039/c4ob00520a
日期:——
The nBu4NI-catalyzed sequential C–O and C–N bond formation via multiple sp3C–H bond activation of ethylarenes, using N,N-dialkylformamide as the amino source, provided α-ketoamides with moderate yields.
所述Ñ卜4 NI -催化的顺序C-O和C-N键的形成通过多个SP 3 C-H键活化ethylarenes,采用Ñ,Ñ -dialkylformamide作为氨基源,提供α酮酰胺具有中等产率。
Transition metal-free synthesis of α-ketoamides from arylmethyl ketones and alkylphosphoramides
作者:Ahalya Behera、Wajid Ali、Manisha Tripathy、Diptimayee Sahoo、Bhisma K. Patel
DOI:10.1039/c6ra16118a
日期:——
transition metal-free protocol has been developed for the synthesis of α-ketoamides from aryl methyl ketones and alkylphosphoramides in the presence of oxidant, aqueous tert-butyl hydroperoxide (TBHP). A series of aryl methyl ketones having both electron-donating as well as electron-withdrawing groups were successfully employed for the synthesis of their corresponding α-ketoamides using hexamethylphosphoramide