Photochemical and Lewis??acid??catalyzed rearrangement of 1??phenyl??4??methyl??3, 6??dioxabicyclo [3.1. 0] hexan??2??one into its tetronic acid isomer

…, H Cerfontain, JF Piniella

Index: Caus, Maria J.; Cerfontain, Hans; Piniella, Juan F. Recueil: Journal of the Royal Netherlands Chemical Society, 1983 , vol. 102, p. 515 - 519

Full Text: HTML

Citation Number: 0

Abstract

Abstract The irradiation of 2 in acetonitrile or methanol with λ 254 nm yields the tetronic acid derivative 3. The (thermal) BF 3-catalyzed rearrangement of 2 yields the same tetronic acid derivative. The structure of the tetronic acid 3 has been determined by means of X-ray analysis; it forms monoclinic crystals with cell constants a= 10.868, b= 8.320, c= 20.936 Å and β= 90.65. The space group is P2 1/n; in the unit cell there are eight molecules which ...