4-tert-Butylcatechol → 1-Ethenyl-4-(trifluoromethyl)benzene

Participants

Reaction Steps

To the compound (I) (27.0 g/0.142 mol) were added potassium hydrogensulfate (7 g) and 4-tert-butylcatechol (polymerization inhibitor, 0.01 g). The mixture was distilled at 150° to 180° C. using an oil bath to collect the whole distillate. Ether (20 ml) was added to the distillate, an ethereal layer was separated from water, and sodium sulfate was added to the layer for dehydration, followed by filtration. The ether was removed from the filtrate, to which 4-tert-butylcatechol was added again. The filtrate was then distilled at a reduced pressure, giving 4-trifluoromethylstyrene [compound (II)] represented by the formula CF3C6H4CH=CH2, b.p. 78°~80° C. (2660 Pa), colorless transparent liquid, yield 76.5%.

Provenance & Evidence