1444007-18-4Relevant academic research and scientific papers
Bi(OTf)3-catalyzed solvent-free synthesis of pyrano[3,2-c]coumarins through a tandem addition/annulation reaction between chalcones and 4-hydroxycoumarins
Gohain, Mukut,Van Tonder, Johannes H.,Bezuidenhoudt, Barend C.B.
, p. 3773 - 3776 (2013)
A Bi(OTf)3-catalyzed tandem addition/annulation reaction is described in order to synthesize pyrano[3,2-c]coumarins under solvent-free conditions. Substituted/unsubstituted chalcones were conveniently condensed with various 4-hydroxycoumarins b
Br?nsted acidic ionic liquid-catalyzed tandem reaction: An efficient approach towards regioselective synthesis of pyrano[3,2-: C] coumarins under solvent-free conditions bearing lower E-factors
Mahato, Sachinta,Santra, Sougata,Chatterjee, Rana,Zyryanov, Grigory V.,Hajra, Alakananda,Majee, Adinath
, p. 3282 - 3295 (2017/07/28)
1-Butane sulfonic acid-3-methylimidazolium tosylate, [BSMIM]OTs, is found to be a remarkable catalyst for the tandem cyclization of 4-hydroxycoumarin with chalcones for the syntheses of pyrano[3,2-c]coumarins under solvent-free conditions. The developed p
Al(OTf)3-Catalyzed Preparation of 4-Hydroxy-3-propargylic Coumarins and Subsequent Regioselective Cyclization towards Furo- or Pyrano[3,2-c]coumarins
Ponra, Sudipta,Gohain, Mukut,Van Tonder, Johannes H.,Bezuidenhoudt, Barend C.B.
supporting information, p. 745 - 750 (2015/03/30)
An efficient and economical approach to functionalized furo[3,2-c]coumarin and pyrano[3,2-c]coumarin derivatives has been developed from 4-hydroxy-3-(prop-2-ynyl)coumarin derivatives through organocatalysis or metallo-organocatalysis. Selective '5-exo-dig
Design, synthesis and evaluation of 2,4-diarylpyrano[3,2-c]chromen-5(4H)-one as a new class of non-purine xanthine oxidase inhibitors
Virdi, Harpreet S.,Sharma, Sahil,Mehndiratta, Samir,Bedi,Nepali, Kunal
, p. 730 - 736 (2015/09/15)
Keeping in view the recent success of molecular hybridization technique in drug design, 2,4-diarylpyrano[3,2-c]chromen-5(4H)-ones as conjugates of coumarins and chalcones have been designed and synthesized in the present study. The catalytic efficiency of
