Hydrochloric Acid → 4-{(4E)-3-(4-Carboxybenzyl)-5-[2-({4-[1,2,2,2-tetrafluoro-1-(trifluoromethyl)ethyl]benzyl}oxy)-phenyl]pent-4-en-1-yl}benzoic acid

Participants

Reaction Conditions

Reaction Steps

A solution of 170 mg (0.25 mmol) of methyl 4-{(4E)-3-(4-cyanobenzyl)-5-[2-({4-[1,2,2,2-tetrafluoro-1-(trifluoromethyl)ethyl]benzyl}oxy)phenyl]pent-4-en-1-yl}benzoate in 3 ml of 1-propanol and 2 ml of water is mixed with 427 mg (7.6 mmol) of potassium hydroxide and stirred at 110° C. for 12 h. After cooling, the mixture is acidified with 1 M hydrochloric acid, and the crystals which have separated out are filtered off with suction, washed several times with water and dried. 135 mg (0.2 mmol, 79% of theory) of the title compound are obtained.

Provenance & Evidence