2-aromatic-3-halobenzothiazepines

Details 2-aromatic-3-halobenzothiazepines 2-aromatic-3-halobenzothiazepines

C - Chemistry, Metallurgy

07

D

260/238.6

C07D 281/10 (2006.01)

Patent

CA 2030076

2-Aromatic-3-HALObenzothiazepines are prepared by reaction of a 2,3-dihydro-2-aromatic- 3-hydroxybenzothiazepine with a thionyl HALide. For example, dl-cis-2-(4-methoxyphenyl)-2,3-dihydro-3-hydroxy- 1,5-benzothiazepin-4(5H)-one refluxed with thionyl chloride can prepare E-2-(4-methoxyphenyl)-3-chloro- 1,5-benzothiazepin-4(5H)-one in 66 percent yield.

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