Process for preparing 1,5-benzothiazepine derivative

Details Process for preparing 1,5-benzothiazepine derivative Process for preparing 1,5-benzothiazepine derivative

C - Chemistry, Metallurgy

07

D

C07D 281/10 (2006.01) F02D 29/02 (2006.01) F02D 45/00 (2006.01)

Patent

CA 2056129

A process for preparing hydrochloride of 3-acetoxy-2, 3-dihydro-5-[ 2-(dimethylamino)ethyl]-2-(p- methoxyphenyl)- 1, 5-benzothiazepin-4(5H)-one which comprises reacting 3-hydroxy-2, 3-dihydro-5-[2-(dimethyl- amino)ethyl]-2-(p-methoxyphenyl)-1, 5-benzothiazepin- 4(5H)-one with acetyl chloride in acetic acid or a mixed solvent of acetic acid and acetic anhydride. According to the process, hydrochloride of 3-acetoxy-2, 3-dihydro-5-[2- (dimethylamino)ethyl]-2-(p-methoxyphenyl)-1,5-benzo- thiazepin-4(5H)-one is readily obtained in one step.

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