Oxidative C(Sp3)–H activation and C–N cleavage of N-methyl amines under transition-metal-free condition for synthesis of methylene-bridged bis-1,3-diketones
作者:Xiaohu Wang、Yi Wang、Yu Yuan、Chun-Hui Xing
DOI:10.1016/j.tet.2014.01.033
日期:2014.3
A transition-metal-free oxidative methylenation reaction was developed. Methylene-bridged bis-1,3-dicarbonyl compounds were synthesized by oxidative C(Sp(3))-H activation and C-N cleavage of N-methyl amines. This novel reaction avoids the use of transition metal catalyst. Furthermore, the reaction are very mild and operational convenient. (C) 2014 Elsevier Ltd. All rights reserved.
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.