| 摘要 |
2-Aromatic-3-HALObenzothiazepines are prepared by reaction of a 2,3-dihydro-2-aromatic-3-hydroxybenzothiazepine with a thionyl HALide. For example, di-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. |
