Trifluoromethanesulfonic acid → 4,4'-Dihydroxybiphenyl

Participants

Reaction Steps

10 g (24.5 mmole) of 3,3',5,5',-tetra-tert-butyl-diphenoquinone in 40 ml ethylbenzene was hydrogenated as in Example 9. The filtrate was transferred to a popbottle containing 1.5 g (10 mmol) trifluoromethane sulfonic acid and a magnetic stirring bar. The reaction mixture was kept at 120° C. for 45 minutes. 4 g of 4,4'-biphenol was obtained as white material after recrystallization from acetone (88% yield). The filtrate contained 13.8 g (85.2 mmol) of p- and m-tert-butyl-ethyl-benzene (86.9% yield).

Provenance & Evidence