关键词: 辐射, 反应机理, 催化剂, 羰基化合物, 醛, 加成反应, 超声, 苯并噻唑 P, 三乙胺, 丁烯酮

1,4-Dicarbonyl compounds RCOCH2CH2COMe (R = Ph, Et, Bu, hexyl) were prepared by the Michael addition of RCHO, which act as the synthetic equivalent of carbonyl anion, to H2C:CHCOMe in the presence of benzothiazolium salts I (R = PhCH2, Me, Bu, X = Br, Cl, iodo) and Et3N. The reaction mechanism and an improved method for the preparation of benzothiazolium salts under ultrasonic irradiation were also discussed.

Key words: RADIATION, REACTION MECHANISM, CATALYST, CARBONYL COMPOUNDS, ALDEHYDES, ADDITION REACTION, ULTRASONIC, BENZOTHIAZOLE P, TRIETHYL AMINE, BUTENONE