The reaction of lactonization of olefins with carboxyalkyl radicals and Mn(OAc)3 was carried out under ultrasound irradiation at low temperatures Good yields of lactones were obtained in short reaction times. In sonochemical conditions, reoxidation of Mn(II) occurred, allowing the development of a lactonization procedure with a catalytic amount of Mn(III).
Sonochemical lactonization of olefins with ceric ammonium nitrate and monomethyl ester of malonic acid
作者:Andrea D'Annibale、Corrado Trogolo
DOI:10.1016/s0040-4039(00)73056-5
日期:1994.3
Lactonization of olefins with monomethyl ester of malonicacid and ceric ammonium nitrate was carried out in acetic acid and in acetonitrile under simple mechanical stirring or ultrasound irradiation. Comparative results are reported; for activated olefins a good ultrasonic acceleration was observed.