Polyvinylsulfonic acid as a novel Brønsted acid catalyst for the synthesis of bis(indolyl)methanes

Autor:	Ziyauddin S. Qureshi, Krishna M. Deshmukh, Bhalchandra M. Bhanage, Sunil S. Ekbote
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Indole test Ethanol Chemistry Polyvinylsulfonic acid General Chemistry Aldehyde Catalysis Solvent chemistry.chemical_compound Yield (chemistry) Environmental Chemistry Organic chemistry Brønsted–Lowry acid–base theory
Zdroj:	Green Chemistry Letters and Reviews. 4:177-183
ISSN:	1751-7192 1751-8253
DOI:	10.1080/17518253.2010.528048
Popis:	Polyvinylsulfonic acid as a novel, biodegradable, and efficient Bronsted acid catalyst for the reaction of indoles with aldehydes to obtain bis(indolyl)methanes has been reported. The catalyst exhibited remarkable activity, recyclability, and tolerated a wide variety of functional groups providing the desired bis(indolyl)methanes in excellent yield (64–96%) at room temperature using ethanol as a solvent. The effect of different reaction parameters like solvent, temperature, catalyst doses, and recyclability were investigated for the title reaction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::44c7e65afad7655e771ddc5bd2079204 https://doi.org/10.1080/17518253.2010.528048 Zobrazit plný text záznamu