Ethanol → 4-(2-(5,6,7,8-Tetrahydro-3,5,5,8,8-pentamethyl-2-naphthalenyl)-1-propenyl) benzoic acid

Participants

Reaction Steps

13.5 g of E-4-[2-methyl-2-(1,1,4,4,6-pentamethyl-1,2,3,4-tetrahydronaphth-7-yl)-vinyl]-benzonitrile in a mixture of 200 ml of ethanol and 200 ml of 10N sodium hydroxide solution were heated at the boil for 3 hours. The mixture was then cooled, after which it was poured onto 1 liter of water, and the colorless precipitate was filtered off under suction and dried to give 14.9 g of E-4-[2-methyl-2-(1,1,4,4,6-pentamethyl-1,2,3,4-tetrahydronaphth-7-yl)-vinyl]-benzoic acid of melting point 204°-206° C. (cf. Example 2).

Provenance & Evidence