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。
Double carbonylation of aryl iodides with diethylamine catalyzed by dinuclear palladium complexes
作者:Naofumi Tsukada、Yoichi Ohba、Yoshio Inoue
DOI:10.1016/j.jorganchem.2003.08.014
日期:2003.12
Dinuclear palladium complexes bridged by a novel PNNP ligand, N,N′-bis[(2-diphenylphosphino)phenylformamidinate (dpfam), were found to be very efficient and selective catalysts for the doublecarbonylation of iodobenzene with diethylamine using K3PO4 as base and 1,4-dioxane as solvent with a TON up to 105 and selectivity of 96%.
已发现由新型PNNP配体N,N'-双[(2-二苯基膦基)苯基甲ami酸盐(dpfam)桥接的双核钯络合物是非常有效的选择性催化剂,可使用K 3 PO 4作为二乙胺与二乙胺进行双羰基化反应。碱和1,4-二恶烷作为溶剂,TON高达10 5,选择性为96%。
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
Abstract Herein, we report a Zinc catalyzed double carbonylation of aryliodides with secondary amines under CO pressure for the synthesis of α-ketoamides in good to excellent yields. This methodology provides a simple and economic approach to derivatize useful α-ketoamides.
摘要 在此,我们报道了在 CO 压力下锌催化芳基碘化物与仲胺的双羰基化反应,以良好至优异的产率合成 α-酮酰胺。该方法提供了一种简单且经济的方法来衍生有用的 α-酮酰胺。
Construction of C(CO)–C(CO) Bond via NHC-Catalyzed Radical Cross-Coupling Reaction
作者:Hai-Bin Yang、Xiao-Fang Jin、Hui-Ying Jiang、Wenwei Luo
DOI:10.1021/acs.orglett.3c00272
日期:2023.3.24
A C(sp2)–C(sp2) bond can be constructed via a photoredox/N-heterocyclic carbene (NHC)-cocatalyzed radical cross-couplingreaction, which provides a complementary strategy to classic electron pair processes. The present protocol represents the first example of an NHC-catalyzed two-component radical cross-couplingreaction involving C(sp2)-centered radical species. The decarboxylative acylation of oxamic