1246677-41-7Relevant academic research and scientific papers
Regio- and stereoselective synthesis of 1-benzopyrano[2,3-b]pyrrolo[2,3-d] pyridines: A microwave-accelerated intramolecular [3+2] cycloaddition reaction of azomethine ylide
Maiti, Sourav,Lakshmykanth,Panja, Suman Kalyan,Mukhopadhyay, Ranjan,Datta, Ayan,Bandyopadhyay, Chandrakanta
, p. 763 - 768 (2011)
Figure represented. Regio- and stereoselective syntheses of tetracyclic compounds having chromone, pyrrolidine, and piperidine rings have been accomplished by an intramolecular [3+2] cycloaddition reaction involving azomethine ylide. The reactions were ca
Effects of substituent and catalyst on the intramolecular Povarov reaction - Synthesis of chromenonaphthyridines
Maiti, Sourav,Panja, Suman Kalyan,Sadhukhan, Koushik,Ghosh, Jaydip,Bandyopadhyay, Chandrakanta
scheme or table, p. 694 - 696 (2012/02/15)
2-(N-Alkenyl-N-aryl)aminochromone-3-carbaldehyde undergoes intramolecular Povarov reaction with aromatic amines in the presence of Ph3P· HClO4 to produce chromenonaphthyridine. The effects of substituent and catalyst have been studie
A one-pot rearrangement of 2-(N-Alkyl-N-aryl)aminochromone-3-carbaldehyde to N-Alkyl-3-salicyloyl-2-quinolone - An antileishmanial agent
Maiti, Sourav,Mallick, Suvadip,Panja, Suman Kalyan,Pal, Chiranjib,Bandyopadhyay, Chandrakanta
, p. 2001 - 2004 (2011/10/08)
2-(N-Aryl)aminochromone-3-carbaldehyde does not show any change on heating in acetic acid, but under the same reaction conditions 2-(N-alkyl-N-aryl) aminochromone-3-carbaldehyde rearranges to 3-salicyloyl-2-quinolones, which exhibits antileishmanial activ
Substituent-controlled domino-Knoevenagel-hetero Diels - Alder reaction - A one-pot synthesis of polycyclic heterocycles
Maiti, Sourav,Panja, Suman Kalyan,Bandyopadhyay, Chandrakanta
scheme or table, p. 7625 - 7632 (2010/12/25)
The reaction of 2-(N-alkenyl-N-aryl)amino-4-oxo-4H-1-benzopyran-3- carbaldehyde with dimedone/Meldrum's acid/4-hydroxycoumarin by heating in ethanol in the presence of pyridine produces polycyclic heterocycles bearing pyridine and pyran rings in a one-pot reaction. The effect of substituents on N-atom of the amino function controls the mode of reaction. Terminal alkenes prefer intramolecular Michael type reaction, but non-terminal alkenes favour Diels-Alder reaction, whereas, under similar condition, 2-(N-alkyl-N-allyl) amino-4-oxo-4H-1-benzopyran-3-carbaldehyde undergoes domino-Knoevenagel-hetero Diels-Alder reaction.
