1,2- and 1,4-Additions of 2-Alkynylcyclohexadienimines with Aromatic Amines To Access 4-Amino-N-arylindoles and -azepinoindoles
摘要:
2-Alkynylcyclohexadienimines, derived from the oxidation of 2-alkynylanilines, react with aromatic amines leading to N-arylindoles with a 4-amino substitution. The reaction was metal-controlled, and Bi(OTf)(3) proved to be the best catalyst. The resulting 4-amino N-arylindoles could be converted to azepino[4,3,2-cd]indoles through condensation with aldehydes.
1,2- and 1,4-Additions of 2-Alkynylcyclohexadienimines with Aromatic Amines To Access 4-Amino-<i>N</i>-arylindoles and -azepinoindoles
作者:Li Zhang、Zhiming Li、Renhua Fan
DOI:10.1021/ol3029675
日期:2012.12.7
2-Alkynylcyclohexadienimines, derived from the oxidation of 2-alkynylanilines, react with aromatic amines leading to N-arylindoles with a 4-amino substitution. The reaction was metal-controlled, and Bi(OTf)(3) proved to be the best catalyst. The resulting 4-amino N-arylindoles could be converted to azepino[4,3,2-cd]indoles through condensation with aldehydes.