Synthesis of Pharmacologically Active Bis(indolyl) and Tris(indolyl) Derivatives Using Chlorotrimethylsilane
作者:Nongthombam G. Singh、Chingrishon Kathing、Jims W. S. Rani、Rishan L. Nongkhlaw
DOI:10.1002/jccs.201300467
日期:2014.4
comparatively fast and efficient catalyst for carrying out electrophilic substitution reactions of indoles with various aldehydes/ketones/triethylorthoformate, yielding excellent amount of bis(indolyl)methanes/tris(indolyl)methanes. The merits of this protocol are avoidance of any external energy source, minimal reaction time, simple and easy procedure and high yield under solvent free room temperature condition
Synthesis of aryl/alkyl(2,2′-bis-3-methylindolyl)methanes and aryl(3,3′-bis indolyl)methanes promoted by secondary amine based ionic liquids and microwave irradiation
作者:Pranab J. Das、Jupitara Das
DOI:10.1016/j.tetlet.2012.06.106
日期:2012.8
Aryl/alkyl(2,2'-bis-3-methylindolyl)methanes and aryl(bis-3,3'-indolyl)methanes are synthesized in high yield using ionic liquids mediated by microwave. Reaction conditions and product recovery are simple and ionic liquids could be recycled. (C) 2012 Elsevier Ltd. All rights reserved.
US8524846B1
申请人:——
公开号:US8524846B1
公开(公告)日:2013-09-03
Triethylbenzylammonium Chloride as a Useful and Efficient Catalyst for the Alkylation of Indole/substituted Indoles in Water: A Comparative Study between Conventional and Microwave Irradiation
green and facile method for the alkylation of indole/substituted indole in water using a phase Transfer catalyst (Triethylbenzylammonium Chloride, TEBA) to synthesise bis‐indolyl methanes (BIMs) and Michael addition of indole to α,β‐unsaturated carbonyl compounds is reported. The substitution of indoles occurred exclusively at the 3‐position and products of N‐alkylation has not been observed. However