Author/Authors :
Ruiz، نويسنده , , Enrique and Rodrيguez-Lَpez، نويسنده , , Hortensia and Coro، نويسنده , , Julieta and Salfrلn، نويسنده , , Esperanza and Suلrez، نويسنده , , Margarita and Martيnez-Alvarez، نويسنده , , Roberto and Martيn، نويسنده , , Nazario، نويسنده ,
Abstract :
The condensation of Meldrum’s acid, aromatic aldehydes, alkyl acetoacetates and ammonium acetate in glacial acetic acid under ultrasound irradiation at room temperature results in the formation of 3,4-dihydropyridone derivatives (4a–p) in 85–96% yields. Compared with conventional methods, the main advantages of the present procedure are milder conditions, shorter reaction times and higher yields.
Keywords :
Ultrasound irradiation , Sonochemistry , 3 , 4-Dihydropyridone derivatives
