139449-21-1

Basic information

• Product Name: 4H-1-Benzopyran-4-one, 2,3-dihydro-3-(phenylthio)-
• CAS NO: 139449-21-1
• Molecular Formula: C15H12O2S
• Molecular Weight: 256.325
• Mol File: 139449-21-1.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 4H-1-Benzopyran-4-one, 2,3-dihydro-3-(phenylthio)-(CAS DataBase Reference)
• NIST Chemistry Reference: 4H-1-Benzopyran-4-one, 2,3-dihydro-3-(phenylthio)-(139449-21-1)
• EPA Substance Registry System: 4H-1-Benzopyran-4-one, 2,3-dihydro-3-(phenylthio)-(139449-21-1)

Safety Data

• Hazardous Substances Data: 139449-21-1(Hazardous Substances Data)

Upstream product

• 1776-09-6 3-bromochroman-4-one 
• 930-69-8 sodium thiophenolate 
• 108-98-5 thiophenol 

Downstream Products

• 153618-00-9 3-(4-methoxyphenyl)-3-phenylthio-2,3-dihydro-(4H)-benzopyran-4-one 
• 153618-01-0 3-(2,4-dimethoxyphenyl)-3-phenylthio-2,3-dihydro-(4H)-benzopyran-4-one 
• 153618-02-1 3-phenylthio-3-(2,4,6-trimethoxyphenyl)-2,3-dihydro-(4H)-benzopyran-4-one 
• 139449-31-3 3-Benzenesulfonyl-3-((E)-3-phenyl-allyl)-chroman-4-one 
• 139449-30-2 3-phenylsulfonyl-3-(2-propenyl)chroman-4-one 
• 139449-39-1 3-cinnamyl-chroman-4-one 
• 97904-75-1 isoflavanone 
• 574-12-9 isoflavone 
• 1621-58-5 3-(4-methoxyphenyl)-4H-chromen-4-one 
• 58113-16-9 2',4'-dimethoxyisoflavone 
• 105705-48-4 3-(4-methoxyphenyl)chroman-4-one 
• 140870-46-8 3-phenyl-3-(phenylsulfonyl)chroman-4-one 
• 139449-23-3 3-(benzenesulfonyl)chroman-4-one 
• 153617-99-3 3-phenyl-3-phenylthio-2,3-dihydro-(4H)-benzopyran-4-one 

Relevant articles and documents

Aryllead mediated synthesis of isoflavanone and isoflavone derivatives

The reaction of aryllead (IV) triacetates with 3-(phenylthio)-chroman-4-one and 2-p-methoxyphenyl-3-(phenylthio)-chroman-4-one derivatives was carried out in chloroform in presence of pyridine to afford moderate to quantitative yields of the corresponding hindered 3-aryl-3-phenylthiochroman-4-one derivatives. Removal of the phenylthio group by oxidation with dimethyldioxirane led to the corresponding isoflavones and 2-p-methoxyphenylisoflavones, and by reduction with a large excess of nickel boride to the isoflavanones and 2-(4′-anisyl)-isoflavanones respectively. In the 2-p-methoxyphenyl series the nickel boride reduction of the compounds bearing ortho-substituted 3-aryl groups gave the chalcones which were recyclised under basic catalysis.