p-Toluenesulfonic acid → 1,1,3,3-Tetramethylindan-5-ol

Participants

Reaction Steps

172.5 g of 4-tert.-butylphenol, 57.5 g of 2,2-bis-(4-hydroxyphenyl)-propane and 20 g of p-toluene sulphonic acid are stirred in an autoclave for 6 hours at around 180° C. After cooling, the reaction mixture is repeatedly washed with about 250 ml of 10 % by weight aqueous sodium hydrogen carbonate solution to remove the catalyst, and then subjected to fractional distillation in vacuo. 9.3 g (0.05 mol) of 5-hydroxy-1,1,3,3-tetramethyl indane are isolated from 157.7 g of reaction mixture.

Provenance & Evidence