Fluorinated acetylenes. Part 14. Reaction of hexafluorobut-2-yne with 3-carboethoxyfuran and with cycloheptatriene
作者:Michael G. Barlow、Nadia N.E. Suliman、Anthony E. Tipping
DOI:10.1016/0022-1139(94)03100-e
日期:1995.1
Reaction of 3-carboethoxyfuran (4) with hexafluorobut-2-yne (5) (1:2 molar ratio) at room temperature in dichloromethane afforded the Diels-Alder 1:1 adduct (3) (7%) and three 2:1 adducts formed by further addition of the furan 4 across the least substituted doublebond of 1:1 adduct 3, i.e. the exo,endo- (8a) (39.5%), exo,exo- (9a) (24%) and exo,exo- (10a) (24%) isomers in which the two CO2Et groups