20043-68-9

Basic information

• Product Name: 5,7-dimethoxy-3-phenyl-2H-1-benzopyran-2-one
• Synonyms: 5,7-dimethoxy-3-phenyl-2H-1-benzopyran-2-one
• CAS NO: 20043-68-9
• Molecular Weight: 282.296
• Mol File: 20043-68-9.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: 5,7-dimethoxy-3-phenyl-2H-1-benzopyran-2-one(CAS DataBase Reference)
• NIST Chemistry Reference: 5,7-dimethoxy-3-phenyl-2H-1-benzopyran-2-one(20043-68-9)
• EPA Substance Registry System: 5,7-dimethoxy-3-phenyl-2H-1-benzopyran-2-one(20043-68-9)

Safety Data

• Hazardous Substances Data: 20043-68-9(Hazardous Substances Data)

Upstream product

• 6468-93-5 5,7-dihydroxy-3-phenylcoumarin 
• 74-88-4 methyl iodide 
• 1555-80-2 phenylacetic anhydride 
• 708-76-9 2-hydroxy-4,6-dimethoxybenzaldehyde 
• 103-82-2 phenylacetic acid 
• 140-29-4 phenylacetonitrile 
• 77-78-1 dimethyl sulfate 
• 500-99-2 3,5-dimethoxyphenol 
• 1279586-95-6 3,5-dimethoxyphenyl 2-phenylacetate 

Relevant articles and documents

Spectroscopic study of 3-aryl-7-methoxy-coumarin, iminocoumarin and bis-iminocoumarin derivatives in solution

3-Phenyl-5,7-dimethoxycoumarin and 3-(2-thienyl)-7-methoxycoumarin were strongly fluorescent in organic solution, with quantum yields reaching 0.84. In contrast, the iminocoumarin analogs of these dyes were poorly emissive. This shows that the behaviour o

A convenient synthesis of 3-arylcoumarins from arylacetonitriles

The condensation of salicylaldehydes with various arylacetonitriles catalyzed by anion-exchange resins such as Amberlite IRA 900, leads to the corresponding 3-arylcoumarins in good yields and selectivity.

Phase transfer catalysed synthesis of 3-phenylcoumarins

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