Gold/copper-catalyzed activation of the aci-form of nitromethane in the synthesis of methylene-bridged bis-1,3-dicarbonyl compounds
作者:Rengarajan Balamurugan、Seetharaman Manojveer
DOI:10.1039/c1cc14926a
日期:——
Activation of the aci-form of nitromethane using Lewis acids for the attack of carbon nucleophiles was studied. 1,3-Dicarbonyl compounds in the presence of catalytic amounts of AuCl3 or Cu(OTf)2 in nitromethane solvent could be converted into methylene-bridged bis-1,3-dicarbonyl compounds.
Iron-Catalyzed Selective Oxidation of <i>N</i>-Methyl Amines: Highly Efficient Synthesis of Methylene-Bridged bis-1,3-Dicarbonyl Compounds
作者:Haijun Li、Zhiheng He、Xingwei Guo、Wenjuan Li、Xuhui Zhao、Zhiping Li
DOI:10.1021/ol901751c
日期:2009.9.17
Methylene-bridged bis-1,3-dicarbonyl derivatives were synthesized efficiently by iron-catalyzed oxidative reactions of 1,3-dicarbonylcompounds and N,N-dimethylaniline. Bipyrazoles and substituted 1,4-dihydropyridine were obtained by the reactions of bis-1,3-dicarbonyl compounds with hydrazines and ammonium acetate, respectively.
efficient and simple synthetic approach has been developed for the synthesis of bis-1,3-dicarbonyl compounds via visible light-mediated oxidation of tertiary amines in the presence of CsPbBr3 perovskite. This heterogeneous photocatalyst exhibits highly catalytic activity and broad applicability to a variety of substrates. It can be recycled by simple centrifugal filtration and reused several times without
Facile synthesis of bis-1,3-dicarbonyl compounds using inert dichloromethane as a one-carbon source
作者:Li-Ming Jiang、Kai Xiang、Hai-Juan Jiao、Jing-Lin Yang、Heng-Tong Qu、Xue-Tao Xu、Wen-Bao、Dao-Yong Zhu、Shao-Hua Wang
DOI:10.1016/j.tetlet.2023.154564
日期:2023.6
simple and convenientprocedure for the preparation of valuable bis-1,3-dicarbonyl-substituted methane compounds and their derivatives has been developed using inert dichloromethane as one-carbon source in good to excellent yields. The advantages of this protocol are mild reaction conditions, easily scalable and good functional group compatibility. Moreover, the use of cyclic secondaryamine as the promoter