A versatile method for preparation of indolo[1,2-b]indazole derivatives was developed by using an intramolecularamination reaction of 1-aminoindoline derivatives in reaction with CuI/PHAN/K2CO3 (250 mol%) in 1,4-dioxane at 105 °C. The method provides indoles fused with indazole rings in good yields.
Intramolecular aromatic amination by a hydrazino group for the synthesis of indolo[1,2-b]indazole derivatives
作者:Yong-ming Zhu、Yoshimitsu Kiryu、Hajime Katayama
DOI:10.1016/s0040-4039(02)00545-2
日期:2002.5
A versatile method for the preparation of indolo[1,2-b]indazole derivatives was developed by the aid of palladium-catalyzed aromatic amination reaction starting from indoline derivatives. (C) 2002 Elsevier Science Ltd. All rights reserved.