Water → HCID 20314388, compound

Participants

Reaction Steps

90 g of 2,3-dimethyl-1,3-butadiene, stabilized with 0.2 g of phenothiazine, were added dropwise over the course of 7 hours to a solution of 94 g of phenol, 13 g of 85% strength phosphoric acid and 1 ml of water in 240 ml of xylene at 110° C. To complete the reaction, stirring was continued overnight at 110° C. The acid phase was separated off and extracted by shaking with toluene. The combined organic phases were washed until neutral. Fractional distillation gave 72 g of 2,3,3-trimethyl-5-hydroxy-indane; boiling point: 148° C/12 mm Hg; melting point 66° - 67° C. ##STR36##

Provenance & Evidence