4-(Trifluoromethyl)benzoyl chloride → 6-chloro-7,8-dihydroxy-1-phenyl-3-(p-trifluoromethylbenzoyl)-2,3,4,5-tetrahydro-1H-3-benzazepine

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Reaction Steps

A solution of 0.74 g (0.002 mole) of 6-chloro-7,8-dihydroxy-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride, 0.55 g (0.0025 mole) of p-trifluoromethyl benzoylchloride, 0.17 g (0.002 mole) of sodium bicarbonate and 40 ml of 1:1 acetone-water solution was stirred overnight under nitrogen. The mixture was evaporated to dryness. The residue was extracted with ethylacetate. The extracted material was purified over a silica gel column using methanol-ethyl acetate to give 6-chloro-7,8-dihydroxy-1-phenyl-3-(p-trifluoromethylbenzoyl)-2,3,4,5-tetrahydro-1H-3-benzazepine, m.p. 243°-245° (dec.).

Provenance & Evidence