1025-99-6Relevant articles and documents
One-Pot Assembly of 3-Hydroxycarbazoles via Uninterrupted Propargylation/Hydroxylative Benzannulation Reactions
Reddy, Chada Raji,Subbarao, Muppidi,Sathish, Puppala,Kolgave, Dattahari H.,Donthiri, Ramachandra Reddy
, p. 689 - 693 (2020/01/31)
A novel strategy for the synthesis of 3-hydroxycarbazoles involving the consecutive propargylation/palladium-catalyzed hydroxylative benzannulation of indole-2-carbonyls with propargylic alcohols has been exploited. This one-pot procedure leads to a wide range of substituted 3-hydroxycarbazoles in high yield with a broad substrate scope. The method was further extended to access furano-carbazole derivatives from dialkynols via tandem annulations.
Syntheses of 1-alkyl-2-acylindoles, 1-alkyl-2-acylindole-3-carboxylic acids, and their esters, in superbasic media
Rekhter
, p. 408 - 417 (2007/10/03)
2-Acylindoles and 2-acylindole-3-carboxylic acids are readily alkylated at the nitrogen atom by haloalkanes in a superbasic medium (DMSO + NaOH). For the carboxylic acids, this reaction may proceed either entirely at the nitrogen atom, or at both the the
Oxidation of Indoles with Lead Tetra-acetate and Hydrolysis of 1,2-Disubstituted Indol-3-yl Acetates
Sukari, Mohamed A.,Vernon, John M.
, p. 2219 - 2224 (2007/10/02)
Oxidation of some 1,2-disubstituted indoles with lead tetra-acetate gives the corresponding 3-acetoxy derivatives.Similar oxidation of ethyl indole-2-carboxylate affords an acetoxylated 3,3'-bi-indolyl product; methyl 1-methylindol-3-yl acetate is acetoxylated at the benzylic position of the side-chain.Alkaline hydrolysis of 1,2-disubstituted indol-3-yl acetates is accompanied by autoxidation and rearrangement to give dioxindoles, but hydrolysis of 2-ethoxycarbonyl-1-methylindol-3-yl acetate gives N,N'-dimethyl derivatives of indigo and indirubin.