- An efficient synthesis of new khellactone-type compounds using potassium hydroxide as catalyst via one-pot, three-component reaction
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In the present work, three-component synthesis for novel khellactone-type compounds via the reaction of Meldrum's acid, aryl aldehydes and 5,7-dihydroxy benzopyrone derivatives was described. In this reaction 10-aryl substituted-9,10-dihydropyrano[2,3-h]benzopyrone-8-ones as new khellactone analogous in the presence of catalytic amount of potassium hydroxide as cheap and green basic catalyst were obtained in good to excellent yields under refluxing methanol.
- Karami,Eskandari,Khodabakhshi
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p. 631 - 637
(2014/05/20)
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- One-pot, three component approach to synthesis of multipart fused heterocyclic compounds: Synthesis of fused pyran-2-ones
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An efficient, three-component synthesis of novel class of dihydropyran-2-ones which are fused with coumarin rings, from reaction between Meldrum's acid, aryl aldehydes and 5,7-dihydroxy-4-methyl (and phenyl) coumarin was described. In this research 9,10-dihydropyrano[2,3-h]benzopyrone-8-ones in the presence of catalytic amount of piperidine as organo basic catalyst were obtained in good to excellent yields under refluxing methanol for the time.
- Karami, Bahador,Eskandari, Khalil,Khodabakhshi, Saeed
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p. 76 - 84,9
(2020/09/02)
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