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Current Microwave Chemistry
ISSN (Print): 2213-3356
ISSN (Online): 2213-3364
VOLUME: 1
ISSUE: 2
DOI: 10.2174/2213335601666140620221842      Price:  $58









One-pot, Solvent-free Cascade Michael-reductive Cyclization Reaction for the Synthesis of Ethyl 3,5-disubstituted-1H-pyrrole-2-carboxylates Under Microwave Irradiation

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Author(s): Rajni Khajuria and Kamal K. Kapoor
Pages 110-118 (9)
Abstract:
An efficient, one-pot, solvent-free synthesis of ethyl 3,5-disubstituted-1H-pyrrole-2-carboxylate is achieved by a reaction of 1,3-disubstituted propen-2-one and ethylnitroacetate, in presence of diethylamine (Et2NH) and triethylphosphite (P(OEt)3) under microwave (MW) irradiation via cascade Michael-reductive cyclization. The mechanistic outcome of the reaction has also been described. This protocol establishes an easy access to disubstituted-1H-pyrrole-2- carboxylates in one pot.
Graphical Abstract:
Keywords:
1, 3-disubstituted propen-2-ones, cascade, diethylamine, ethyl 3, 5-disubstituted-1H-pyrrole-2-carboxylates, ethylnitroacetate, Michael-reductive cyclization, MW irradiation, one-pot, solvent-free, triethylphosphite.
Affiliation:
Department of Chemistry, University of Jammu, Jammu-180 006, India.