A Convenient Synthesis of 3(2)-Trifluoroacetylaminobenzo[b]thiophenes and Thiophenes and Some of Their Iodo Derivatives
摘要:
Trifluoroacetylamino derivatives of benzo[b]thiophene and thiophene (3a-d) have been obtained by Curtius rearrangement of the corresponding acyl azides (1a-d) with trifluoroacetic acid. The iodination of these amide derivatives with iodine under mild conditions leads to iodinated products in excellent yield, except in the case of the 3-trifluoroacetylaminobenzo[b]thiophene (3a), which only gives a polymeric residue.
A Convenient Synthesis of 3(2)-Trifluoroacetylaminobenzo[b]thiophenes and Thiophenes and Some of Their Iodo Derivatives
作者:Montserrat Prats、Carmen Gálvez
DOI:10.3987/com-91-5907
日期:——
Trifluoroacetylamino derivatives of benzo[b]thiophene and thiophene (3a-d) have been obtained by Curtius rearrangement of the corresponding acyl azides (1a-d) with trifluoroacetic acid. The iodination of these amide derivatives with iodine under mild conditions leads to iodinated products in excellent yield, except in the case of the 3-trifluoroacetylaminobenzo[b]thiophene (3a), which only gives a polymeric residue.
Beltran, Lluis; Galvez, Carmen; Prats, Montserrat, Journal of Heterocyclic Chemistry, 1992, vol. 29, # 4, p. 905 - 909
作者:Beltran, Lluis、Galvez, Carmen、Prats, Montserrat、Salgado, Juan