Catalytic Synthesis of Substituted Indoles and Quinolines from the Dehydrative C–H Coupling of Arylamines with 1,2- and 1,3-Diols
作者:Hanbin Lee、Chae S. Yi
DOI:10.1021/acs.organomet.6b00273
日期:2016.6.13
The cationic ruthenium-hydride complex catalyzes the dehydrative C-H coupling reaction of arylamines with 1,2-diols to form the indole products. The analogous coupling of arylamines with 1,3-diols afforded the substituted, quinolines. The catalytic method directly forms these coupling products in a highly regioselective manner without generating any toxic byprodficts.
Convenient indole synthesis from ethynylanilines with a polymer-supported fluoride
The cyclization reaction of ethynylanilines having phenyl, alkyl, methoxy, cyano. chloro, mid ethoxycarbonyl groups with (polystyrylmethyl)trimethylammonium fluoride in dry MeCN under an argon atmosphere at 100degreesC proceeded in good yields to give the corresponding indoles without affecting these functional groups. Moreover, the polymer-Supported fluoride could be reused for the cyclization reaction when the deprotection reaction of the N-substituted indole with the fluoride ion 011 resin did not occur under the cyclization conditions. (C) 2002 Elsevier Science Ltd. All rights reserved.
A Novel Indole Synthesis via Conjugate Addition of Pyrrolidine to o-Nitrophenylacetylenes