New methodology for the preparation of pyrrole and indole derivatives via iminophosphoranes:synthesis of pyrrolo[1,2-a]quinoxalines, indolo[3,2-c]quinolines and indolo[1,2-c]quinazolines
作者:Pedro Molina、Mateo Alajarin、Angel Vidal
DOI:10.1016/s0040-4020(01)81384-3
日期:1990.1
yl pyrrole with heterocumulenes leads to functionalized pyrrolo[l,2-a]quinoxalines. Iminophosphorane , derivedfrom2-(o-amino)phenyl indole, reacts under mild conditions with isocyanates to form which are converted into 5-amino-11H-indolo[3,2-c]quinolines . Iminophosphorane 19 also reacts with carbon dioxide and carbon disulfide to give indolo[3,2-c]quinolines . Iminophosphorane . derivedfrom 2-
ortho-Pyrrolylphenyl heterocumulenes: Preparation and cyclization to fused pyrroles
作者:Pedro Molina、Mateo Alajarín、Angel Vidal
DOI:10.1016/s0040-4039(00)99141-x
日期:1989.1
The aza-Wittig reaction of iminophosphoranes derived from o-(1-pyrrolyl)phenyl azide and 2-(o-aminophenyl)indole with isocyanates, isothiocyanates, carbon dioxide or carbon disulfide, lead to functionalized pyrrolo[1,2-a]quinoxalines and 11H-indolo[3,2-c]quinolines respectively.
EtOS<sub>2</sub>K as a C1 Source: Solvent- and Temperature-Controlled Selective Synthesis of Quinoline-2-thione and Quinoline-2-one Derivatives
作者:Yue Zhang、Yu-Jie Chen、Xiao-Dong Yue、Yu-Lian Zhang、Jin-Hong Jia、Ming Li、Xi-Cun Wang
DOI:10.1021/acs.orglett.4c00561
日期:2024.3.8
Herein, we disclosed a highly chemoselective synthesis of quinoline-2-one and quinoline-2-thione derivatives using EtOS2K as the C1 source. Quinoline-2-one derivatives were synthesized selectively with NaCl as a catalyst in the solvent DMSO/H2O, while quinoline-2-thione derivatives were produced without the need for any catalyst in an environmentally friendly solvent EtOH/H2O. The reaction conditions