Process for the preparation of 3-hydroxy benzodiazepinones

Details Process for the preparation of 3-hydroxy benzodiazepinones Process for the preparation of 3-hydroxy benzodiazepinones

C - Chemistry, Metallurgy

07

D

260/240.3

C07D 243/26 (2006.01) C07D 243/24 (2006.01)

Patent

CA 1195326

Abstract: Conversion of 3-acyloxy-benzodiazepin-2-ones into corresponding 3-hydroxy benzodiazepin-2-ones is carried out efficiently with potassium hydroxide or potassium alkoxide as catalyst in lower alkanol solvent at a pH of 11-11.5. The final products, which include temazepam, are useful as sleep inducers.

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