Electroorganic chemistry. XXI. Selective formation of .alpha.-acetoxy ketones and general synthesis of 2,3-disubstituted 2-cyclopentenones through the anodic oxidation of enol acetates
A Selective Catalytic Method of Enol-acetylation under Microwave Irradiation
作者:Dipok J. Kalita、Ruli Borah、Jadab C. Sarma
DOI:10.1039/a902094b
日期:——
Six-membered cyclic ketones on treatment with acetic anhydride and a catalytic amount of iodine under microwave irradiation give the corresponding enol acetates in good yield.
处理六元环酮与醋酸酐和少量催化碘在微波辐射下,可以得到相应的烯醇醋酸酯,产率良好。
Selective Dimerization by Paired Electrolysis of Enol Acetate
Electrolysis of enol esters of cyclic ketones possessing an alkyl group at the α-position using graphite carbon electrodes (EGM62 or EG10 : Nippon Carbon Co. Ltd.) brought about selective dimerization at the β-position of the ketones to give the corresponding 1,6-diketones in good to moderate yields. It was found that initial anodic formation of α,β-unsaturated ketones was successively followed by cathodic hydrodimerization (paired electrolysis) in an undivided cell.
TWO-CARBON MICHAEL ACCEPTORS. ACETYL CATION EQUIVALENTS
作者:Hitoshi Kinoshita、Isaburo Hori、Takeshi Oishi、Yoshio Ban
DOI:10.1246/cl.1984.1517
日期:1984.9.5
Base-induced Michael condensation of chloromethoxyvinyl phenyl sulfoxides or sulfones with active methylene compounds were examined. The newly introduced functionalized substituents were converted into acetyl group by the subsequent treatment.