Sodium Hydroxide → 2-Chloro-4-[1-oxo-3-(3-hydroxyphenyl)propyl]benzoic acid

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Reaction Steps

A mixture of 2-chloro-4-[1-oxo-3-(3-hydroxyphenyl)propyl]benzoic acid, methyl ester (Example 19; 2.1 g, 6.6 mmol) and 1 M sodium hydroxide solution was stirred for 4 h at room temperature. The solution was filtered through Celite and the filter cake was washed with water (5 mL). 1 M HCl (22 mL) was added to the stirred filtrate and the resulting mixture was stirred for 2 h and then filtered. The solid was washed with water, dried and recrystallized from ether/hexane to give 2-chloro-4-[1-oxo-3-(3-hydroxyphenyl)propyl]benzoic acid (1.59 g, 79%) as an off-white solid.

Provenance & Evidence