Triclosan → Benzyloxy-acetic acid 5-chloro-2-(2,4-dichloro-phenoxy)-phenyl ester

関与物質

反応手順

To a mixture of triclosan (7.53 grams, 26 mmol) and triethylamine (8.2 grams, 81 mmol) in acetone (50 mL) at 0° C. was added benzyloxy acetyl chloride (10 grams, 54.2 mmol) drop wise. The reaction mixture was stirred at room temperature for 18 hours. Solids were filtered off and poured onto cold water (100 mL). Crude 4 was extracted into chloroform, washed with 5% sodium bicarbonate solution (2×50 mL), and water (2×50 mL). The chloroform layer was dried over sodium sulphate and distilled off to get crude 4.

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