Chemical Research in Chinese Universities ›› 2006, Vol. 22 ›› Issue (1): 36-39.

• Articles • Previous Articles     Next Articles

Further Investigation on the Rearrangement Mechanism of Reactions of 1,5-Benzothiazepines with Ethoxycarbonylcarbene

WU Chun-zan, HUANG Jia-xing, ZHANG Qi-han, XU Jia-xi   

  1. Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2005-05-11 Online:2006-02-24 Published:2011-08-06
  • Supported by:

    Supported partly by the National Natural Science Foundation of China(Nos. 20272002 and 20472005), Ministry of Education of P. R. China(SRF for ROCS and EYTP) and Peking University(President Grant).

Abstract: The reactions of 2,3-dihydro-1,5-benzothiazepines with ethoxycarbonylcarbene undergo complex rearrangements to produce ring-opening and ring contraction products. Previously it was presumed that the different products were formed via different mechanisms depending on the kind of substituents at the 2-position of 1,5-benzothiazepines. However, on the basis of the further detailed investigation, it was found that all 1,5-benzothiazepines can undergo the same rearrangement to yield both ring-opening and ring contraction products.

Key words: 1,5-Benzothiazepine, Ethoxycarbonylcarbene, Rearrangement, Ring-contraction, Ring-opening