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Imidazolium Zwitterionic Molten Salt: An Efficient Organocatalyst under Neat Conditions at Room Temperature for the Synthesis of Dipyrromethanes as well as Bis(indolyl)methanes
Author(s) -
Chatterjee Rana,
Mahato Sachinta,
Santra Sougata,
Zyryanov Grigory V.,
Hajra Alakananda,
Majee Adinath
Publication year - 2018
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201800227
Subject(s) - chemistry , chemoselectivity , catalysis , butane , salt (chemistry) , imidazole , organic chemistry , solvent , sulfonate , environmentally friendly , reaction conditions , molten salt , combinatorial chemistry , inorganic chemistry , sodium , ecology , biology
An imidazole‐based zwitterionic‐salt, 4‐(3‐methylimidazolium)butane sulfonate (MBS), has been found to be an efficient organocatalyst for the synthesis of dipyrromethanes as well as bis(indolyl)methanes at room temperature under solvent‐free conditions (neat) in high yields. The reaction procedure is very simple and a large variety of aldehydes have been examined under similar conditions for indoles and pyrroles. The catalytic reaction proceeded very smoothly and showed high chemoselectivity. Clean reaction, ease of product isolation/purification, easily accessible reactants, metal and solvent‐free and environmentally friendly reaction conditions are the notable advantages of the present methodology.