A study of the reaction between 2,4-disubstituted-2,3-dihydro-1,5-benzothiazepines and ketenes generated<i>in situ</i>from chloro and dichloroacetyl chlorides
作者:Qi-Yi Xing、Hong-Zhong Wang、Xin Zhou、Sheng Jin、Yue-Ming Li、Albert S. C. Chan
DOI:10.1002/jhet.5570380302
日期:2001.5
amine, the reaction of 2,4-disubstituted-2,3-dihydro-1,5-benzothiazepine with chloro and dichloroacetyl chlorides produced not only the expected β-lactam derivative of the benzo-thiazepine, but also the ring opening product. Different results were obtained when the substituent at 2-position of the benxothiazepine varied from methyl to aryl, and the substituent on the chloroacetyl chloride varied from
在三乙胺的存在下,2,4-二取代的2,3-二氢-1,5-苯并噻氮ze与氯和二氯乙酰氯的反应不仅产生了预期的苯并-噻氮pine的β-内酰胺衍生物,而且还产生了开环产品。当苄索氮平的2-位上的取代基从甲基变为芳基,而氯乙酰氯上的取代基从H变为Cl时,或在不同温度下进行反应时,可获得不同的结果。讨论了所得产物的结构和反应机理。