6273-42-3Relevant academic research and scientific papers
A novel synthesis of γ-nitro ketones via detrifluoroacetylative Michael addition of 1-trifluoromethyl-1,3-diketones to conjugated nitroalkenes
Barkov, Alexey Yu.,Korotaev, Vladislav Yu.,Sosnovskikh, Vyacheslav Ya.
, p. 6819 - 6821 (2019/04/10)
A novel synthesis of γ-nitro ketones via detrifluoroacetylative Michael addition of 1-trifluoromethyl-1,3-diketones to conjugated nitroalkenes in the presence of sodium acetate in ethanol at room temperature is developed. A series of trifluoromethylated 1
Henry reaction and 1,4-addition of nitroalkanes to α,β- unsaturated carbonyl compounds under the influence of MS 4 A in DMSO
Oriyama, Takeshi,Aoyagi, Masaru,Iwanami, Katsuyuki
, p. 612 - 613 (2008/02/07)
In the presence of MS 4 A in DMSO (dimethyl sulfoxide), Henry reaction with various carbonyl compounds and nitroalkanes proceeded smoothly to give the corresponding β-nitroalcohol without a base catalyst. Moreover, 1,4-additon of nitroalkane to α,β-unsaturated ketones was also performed in DMSO. Copyright
New synthesis of 1,3-diaryl-4-nitro-1-butanones by microwave-promoted Michael addition of nitromethane to chalcones without solvent
Li, Shuangshuang,Xie, Zengyang,Bian, Xiaoqin,Wang, Cunde
, p. 660 - 661 (2008/09/17)
The Michael addition of nitromethane to chalcones promoted by microwave irradiation without solvent afforded 1,3-diaryl-4-nitro-1-butanones in good yield. The products were characterised by IR, 1H NMR and elemental analysis.
One-pot synthesis of substituted Δ1-pyrrolines through the Michael addition of nitroalkanes to chalcones and subsequent reductive cyclization in aqueous media
Liang, Yongjiu,Dong, Dewen,Lu, Yumei,Wang, Yan,Pan, Wei,Chai, Yanyan,Liu, Qun
, p. 3301 - 3304 (2008/09/17)
A facile and efficient one-pot synthesis of substituted Δ1-pyrrolines in aqueous media has been developed. Upon treatment with aqueous sodium hydroxide in N,N-dimethylformamide, a range of chalcones underwent room temperature Michael addition r
Enamines in solid-phase: Synthesis and reactivity towards electrophiles
Aznar, Fernando,Valdés, Carlos,Cabal, María-Paz
, p. 5683 - 5687 (2007/10/03)
Enamines are synthesized in solid-phase by amination of terminal, acetylenes with a secondary amine attached to Wang resin in a process catalyzed by mercury (II) acetate. The enamines obtained react with electrophiles such as isocyanates and nitroolefins to give rise to the expected addition products, which can be released from the resin by hydrolysis of the enamine under mild acidic conditions. (C) 2000 Elsevier Science Ltd.
Michael Additions Catalyzed by Metal(II) Complexes
Watanabe, Ken-ichi,Miyazu, Ken-ichi,Irie, Kazuro
, p. 3212 - 3215 (2007/10/02)
Michael-addition reactions have been found to proceed in the presence of the Ni(OAc)2 or Co(OAc)2-2,2'-bypiridine complex in DMF under neutral conditions at room temperature without any by-product.The reactions of chalcone and its derivatives with nitromethane generally gave good results.The effects of metal(II) ions, ligands, counter ions, and solvents on the catalysis were examined, and the features of the metal-complex-catalyzed Michael reactions were studied, with some considerations also being given to the catalysis mechanism.
MICHAEL ADDITIONS CATALYZED BY NICKEL(II) OR COBALT(II)ACETATE-2,2'-BIPYRIDINE COMPLEXES
Irie, Kazuo,Miyazu, Ken-ichi,Watanabe, Ken-ichi
, p. 353 - 354 (2007/10/02)
In the presence of nickel(II) or cobalt(II)acetate-2,2'-bipyridine complexes, α,β-unsaturated ketones, methyl acrylate, and acrylonitrile were found to react with nitromethane, malononitrile, and aniline at room temperature under neutral condition to afford addition products in good yields.
