Process for preparing vinyl substituted beta-diketones
申请人:Southard E. Glen
公开号:US20060069288A1
公开(公告)日:2006-03-30
A process for preparing vinyl substituted beta-diketones includes reacting a halogen-containing beta-diketone with an olefin in a reaction zone under Heck coupling reaction conditions in the presence of a catalyst, a base, and an organic phosphine to provide a vinyl substituted beta-diketone product.
Synthesis of Vinyl-Substituted β-Diketones for Polymerizable Metal Complexes
作者:Glen E. Southard、George M. Murray
DOI:10.1021/jo051051n
日期:2005.10.1
metal ion coordination have been prepared and characterized. Bromine-substituted β-diketones were synthesized under Claisen−Schmidt-type condensation conditions. Vinyl groups were substituted for the halide by one of two types of Heck coupling with high-pressure ethylene. The type of Heck coupling employed was dictated by the thermal sensitivity of the substrate. Seven vinyl-substituted β-diketones were
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.
Copper-Catalyzed Oxidative sp<sup>3</sup>-Carbon Radical Cross-Coupling with Trialkylphosphites Leading to α-Phosphonyl 1,3-Dicarbonyl Compounds
作者:Cheng-Kun Li、Ze-Kun Tao、Zhi-Hao Zhou、Xiao-Guang Bao、Shao-Fang Zhou、Jian-Ping Zou
DOI:10.1021/acs.joc.8b03093
日期:2019.2.15
A copper-catalyzed radical Csp3–H/P(OR)3 cross-coupling reaction for the formation of Csp3–P bonds is described. A range of 1,3-dicarbonyl compounds and trialkylphosphites were coupled in this fashion to give the corresponding products in moderate to good yields. This protocol provides direct access to α-phosphonyl 1,3-dicarbonyl compounds.
Sequential Michael addition/retro-Claisen condensation of 1,3-diarylpropan-1,3-diones with nitrostyrenes: one-step synthesis of 4-nitro-1,3-diarylbutan-1-ones
作者:ZHENG LI、HAO LU、ZHENRONG LIU、XIAOLONG MA
DOI:10.1007/s12039-019-1603-z
日期:2019.4
Abstract The sequential Michael addition/retro-Claisencondensation of 1,3-diarylpropan-1,3-diones with nitrostyrenes is described. 4-Nitro-1,3-diarylbutan-1-ones were efficiently synthesized in good to high yield under mild, transition-metal-free condition. This one-step method involving sequential carbon-carbon bond formation and cleavage provides a good alternative to the synthesis of various \(\gamma