Palladium-Catalyzed Synthesis of α-Iminoamides from Imidoyl Chlorides and a Carbamoylsilane
摘要:
A series of pure imidoyl chlorides were converted into alpha-iminoamides by treatment with a carbamoylsilane under catalysis by palladium(0) complexes.
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.
Copper-Catalyzed Oxidative Synthesis of α-Ketoamides from Aryl Methyl Ketones and N-Bromobutanimide Using N,N-Dimethylformamide as Dimethylamine Source
作者:Ying Wei、Yongxia Yan、Xiaoyan Li
DOI:10.1055/s-0039-1691568
日期:2020.3
A novel and practical Cu(OAc)2-catalyzed oxidative synthesis of α-ketoamides from arylmethylketones and N-bromobutanimide (NBS) using N,N-dimethylformamide (DMF) as dimethylamine (HNMe2) source and solvent has been developed under mild conditions. DMF was used as a HNMe2 source and can be easily converted into HNMe2 by acid hydrolysis. The mechanistic studies indicate that Cu(OAc)2 plays a dual role
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.
Copper-catalyzed oxidative condensation of α-oxocarboxylic acids with formamides: synthesis of α-ketoamides
作者:Hua Wang、Li-Na Guo、Xin-Hua Duan
DOI:10.1039/c3ob40787j
日期:——
A copper-catalyzed coupling of α-oxocarboxylic acids with formamides is reported. This simple method provides a practical approach toward the synthesis of α-ketoamides with a variety of functional groups. Mechanistic studies have shown that the reaction proceeded via a radical process and 13C-labeled experiments proved that the amide carbon in the products comes from the corresponding carboxylic acid, not from the DMF.