15121-01-4Relevant academic research and scientific papers
Epoxidation of electron-deficient αβ-unsatured carbonyl compounds over Keggin heteropoly compounds with acqueous H2O 2
Gao, Qiang,Ding, Yong,Liu, Haitao,Suo, Jishuan
, p. 716 - 718 (2007/10/03)
The epoxidation of a variety of electron-deficient α,β- unsaturated carbonyl compounds has been studied using a series of heteropoly compounds and aqueous hydrogen peroxide in acetonitrile. Among the heteropoly compounds investigated, (CTP)3VMo12O40 showed the highest catalytic performance for the epoxidation of these compounds.
Rearrangement of acyloxyoxiranes: A revised structure for the oxidation product of 5α-androst-16-ene-3α,17-diol 3-benzoate 17-acetate
Subbaraju,Urbanczyk-Lipkowska,Newaz,Manhas,Bose
, p. 10087 - 10092 (2007/10/02)
During the oxidation of conjugated enones to α-acyloxyoxiranes by m-chloroperbenzoic acid, the preferred sequence is epoxidation followed by Baeyer-Villiger oxidation. Rearrangement of acyloxyoxiranes to α-acyloxyketones, in situ, was observed. The α-keto
Formation of β-Hydroxyketones from α,β-Epoxyketones by Photoinduced Single Electron Transfer Reactions
Cossy, J.,Bouzide, A.,Ibhi, S.,Aclinou, P.
, p. 7775 - 7782 (2007/10/02)
Irradiation of α,β-epoxyketones in acetonitrile at 254 nm in the presence of triethylamine afforded β-hydroxyketones in good to moderate yields. Key words: α,β-epoxyketones, β-hydroxyketones, radical, photochemistry.
NEW DEVELOPMENTS OF THE WHARTON TRANSPOSITION
Dupuy, C.,Luche, J. L.
, p. 3437 - 3444 (2007/10/02)
The synthetically useful Wharton transposition can be improved by using a more adequate procedure in the critical step of the intermediate α-epoxyhydrazone cleavage.Either for stable hydrazones or unstable ones, the yield of the transposed allylic alcohol is increased by treatment under anhydrous conditions with highly basic reagents (KDA in the former case, NEt3 in the latter).
THE OXIDATION OF α-β-UNSATURATED KETONES IN AQUEOUS SODIUM PERBORATE
Reed, Kathryn L.,Gupton, John T.,Solarz, Traci L.
, p. 3579 - 3588 (2007/10/02)
A series of α-β-unsaturated ketones has been prepared with sodium perborate in water and a cosolvent to produce the corresponding epoxides in good yield.The reaction constitutes a mild and convenient method for the synthesis of α-β-epoxyketones.
