Selective electrochemical oxidation of aromatic hydrocarbons and preparation of mono/multi-carbonyl compounds
作者:Zhibin Li、Yan Zhang、Kuiliang Li、Zhenghong Zhou、Zhenggen Zha、Zhiyong Wang
DOI:10.1007/s11426-021-1061-x
日期:2021.12
A selective electrochemical oxidation was developed under mild condition. Various mono-carbonyl and multi-carbonyl compounds can be prepared from different aromatic hydrocarbons with moderate to excellent yield and selectivity by virtue of this electrochemical oxidation. The produced carbonyl compounds can be further transformed into α-ketoamides, homoallylic alcohols and oximes in a one-pot reaction
Copper-Catalyzed Aerobic Oxidative Cross-Dehydrogenative Coupling of Amine and α-Carbonyl Aldehyde: A Practical and Efficient Approach to α-Ketoamides with Wide Substrate Scope
A copper-catalyzedaerobicoxidative cross-dehydrogenative coupling (CDC) of amine with α-carbonyl aldehyde has been developed. Many types of amines are tolerant in this transformation leading to various α-ketoamides compounds. Wide substrate scope, CDC strategy and using air as oxidant make this transformation highly efficient and practical. Molecular oxygen acts not only as the oxidant, but also
Silver-catalyzed amidation of benzoylformic acids with tertiary amines via selective carbon–nitrogen bond cleavage
作者:Xiaobin Zhang、Wenchao Yang、Lei Wang
DOI:10.1039/c3ob40619a
日期:——
A novel approach towards the synthesis of α-ketoamides using tertiary amines as nitrogen group sources via C–N bond cleavage has been developed. In the presence of Ag2CO3 and K2S2O8, α-keto acids reacted with tertiary amines to afford the corresponding α-ketoamides in good yields.
已经开发出一种通过叔胺作为氮基源通过C–N键断裂合成α-酮酰胺的新方法。在Ag 2 CO 3和K 2 S 2 O 8的存在下,α-酮酸与叔胺反应以良好的产率得到相应的α-酮酰胺。
Aryl-palladium-NHC complex: efficient phosphine-free catalyst precursors for the carbonylation of aryl iodides with amines or alkynes
作者:Chunyan Zhang、Jianhua Liu、Chungu Xia
DOI:10.1039/c4ob01878h
日期:——
aryl-palladium-NHC compounds was prepared according to the reported methods and their catalytic activity in the carbonylation of aryl iodides to synthesize α-keto amides and alkynones was examined. These practical aryl-palladium-NHC complexes have shown highly efficient catalyzed carbonylation and Sonogashira carbonylation reactions, with high turnover number in synthesis of α-keto amides (TON = 4300) and in synthesis
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.