A. Dannibale et C. Trogolo, SONOCHEMICAL LACTONIZATION OF OLEFINS WITH CERIC AMMONIUM-NITRATE ANDMONOMETHYL ESTER OF MALONIC-ACID, Tetrahedron letters, 35(13), 1994, pp. 2083-2086
Lactonization of olefins with monomethyl ester of malonic acid and cer
ic ammonium nitrate was carried out in acetic acid and in acetonitrile
under simple mechanical stirring or ultrasound irradiation. Comparati
ve results are reported, for activated olefins a good ultrasonic accel
eration was observed.