A facile synthesis of 9-dialkylamino-9H-pyrrolo[1,2-a]indoles via iminium salts generated from 2-(pyrrol-1-yl)benzaldehydes and secondary amine hydrochlorides in the presence of NaI/TMSCl/Et3N
作者:Kazuhiro Kobayashi、Atsushi Takanohashi、Kenichi Hashimoto、Osamu Morikawa、Hisatoshi Konishi
DOI:10.1016/j.tet.2005.11.078
日期:2006.3
The NaI/TMSCl/Et3N-mediated condensation between 2-(pyrrol-1-yl)benzaldehydes and secondary amine hydrochlorides followed by intramolecular trapping of the resulting iminium carbon by the 2-position of the pyrrole ring afforded corresponding 9-dialkylamino-9H-pyrrolo[1,2-a]indoles generally in good yields.
NaI / TMSCl / Et 3 N介导的2-(吡咯-1-基)苯甲醛与仲胺盐酸盐之间的缩合反应,然后通过吡咯环的2位分子内捕获所得的亚胺碳,得到相应的9-二烷基氨基- 9 H-吡咯并[1,2- a ]吲哚通常以良好的产率。