1424328-48-2

Upstream product

• 2033-24-1 cycl-isopropylidene malonate 
• 7758-73-8 5,7-dihydroxy-4-phenyl-2H-1-benzopyran-2-one 
• 135-02-4 ortho-anisaldehyde 
• 108-73-6 3,5-dihydroxyphenol 
• 94-02-0 ethyl 3-oxo-3-phenylpropionate 

Relevant academic research and scientific papers

An efficient synthesis of new khellactone-type compounds using potassium hydroxide as catalyst via one-pot, three-component reaction

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.

One-pot, three component approach to synthesis of multipart fused heterocyclic compounds: Synthesis of fused pyran-2-ones

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.