Benzyl 4-[3-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl)acryloyloxy]-benzoate → 4-[3-(5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthyl)propanoyloxy]benzoic acid

Participants

Reaction Steps

1.7 g (3.7 mmol) of benzyl 4-[3-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl)acryloyloxy]-benzoate, 40 ml of dioxane and 340 mg of palladium on charcoal (10%) are introduced into a reactor. The mixture is hydrogenated at 40° C. and at a pressure of 7 bar for three hours. The catalyst is filtered off and the mixture is evaporated to dryness. The solid obtained is triturated from hexane, filtered off and dried. 1.2 g (85%) of 4-[3-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthyl)propanoyloxy]benzoic acid, with a melting point of 183-4° C., are collected.

Provenance & Evidence