Synthesis of 2-hydroxymalonamides from Carbamoylsilane and A-keto Carboxamides
摘要:
Reaction between N,N-dimethylcarbamoylsilane and N,N-dimethyl-alpha-keto carboxamides affords 2-hydroxy-N,N,N',N'-tetramethyl-2-R-malonamides in good yields.
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.
A novel and easy practical direct synthesis of alpha-ketoamides has been developed without metals in water. This procedure was catalyzed by nBu(4)NI using TBHP as oxidantfrom simple substrates, aryl methyl ketones and dialkylformamides.
Visible-Light-Promoted Metal- and Photocatalyst-Free Reactions between Arylglyoxylic Acids and Tetraalkylthiuram Disulfides: Synthesis of α-Ketoamides
作者:Subhankar Sarkar、Satyajit Pal、Anindita Mukherjee、Sougata Santra、Grigory V. Zyryanov、Adinath Majee
DOI:10.1021/acs.joc.3c02081
日期:2024.2.2
developed for the oxidative cross-coupling of the C–N bond through the reaction between arylglyoxylic acids and tetraalkylthiuram disulfides. The reaction proceeds under ambient air at room temperature in the presence of visible light. This reaction offers a metal-, base-, photocatalyst-, and solvent-free synthesis of various α-ketoamides with moderate to excellent yields via the radical pathway. In addition