烯丙基五氟苯

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Allylpentafluorobenzene [41.6 g; described by Harper et al, J. Org. Chem., 29, 2385 (1964)] was added to a solution of hydrazine hydrate (100 ml) in ethanol (150 ml) and the mixture was heated at reflux for 24 hours. The solid precipitate which formed was collected by filtration and washed with ethanol and hexane to give 4-allyl-2,3,5,6-tetrafluorophenylhydrazine (18.8 g), m.p. 82°-84° C., in the form of colourless crystals. The filtrate was evaporated to dryness and the yellow solid thus obtained was washed with ethanol and hexane to give a further quantity (22.0 g) of 4-allyl-2,3,5,6-tetrafluorophenylhydrazine, m.p. 79°-81° C., in the form of a cream-coloured solid. the mixture was heated at reflux for 24 hours The solid precipitate which formed was collected by filtration washed with ethanol and hexane