cas 20280-81-3, 4-METHOXYCOUMARIN | Articles data ｜lookchem

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20280-81-3

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Reaction of 4-hydroxycoumarin or its O-substituted derivatives with diatomic interhalogens: ICl and IBr
Herein, we present some aspects regarding the iodination/bromination of 4-hydroxycoumarin or its O-methyl or O-acetyl derivatives with iodine monochloride or iodine monobromide as halogenation reagents. Also, the investigation of photochemical transformation of the three 3-iodocoumarins was investigated for the first time.
Popa, Marcel Mirel,Draghici, Constantin,Barbu, Loredana,Dumitrescu, Denisa E.,Dumitrascu, Florea
p. 344 - 350
(2017/02/10)

Synthesis of 4-arylcoumarins via Cu-catalyzed hydroarylation with arylboronic acids
(Chemical Equation Presented) In the presence of 2-4 mol % of CuOAc, methyl phenylpropiolates having a MOM-protected hydroxy group at the ortho position underwent hydroarylation with various arylboronic acids in MeOH at ambient temperature, resulting in the formation of 4-arylcoumarins in high yields after the acidic workup. This method was effectively used for the synthesis of biologically active natural and artificial compounds.
Yamamoto, Yoshihiko,Kirai, Naohiro
experimental part
p. 5513 - 5516
(2009/05/27)

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Chemical Properties

Melting Point: 123-125 °C
Boiling Point: 347.8 °C at 760 mmHg
Flash Point:144.5 °C
Density: 1.26 g/cm³
Solubility:Acetonitrile (Slightly), Chloroform (Slightly), Dichloromethane (Slightly), DMSO
Storage Temp.:Refrigerator
Vapor Pressure: 5.27E-05mmHg at 25°C
Refractive Index: 1.581
BRN: 145960
PSA: 39.44000
LogP: 1.80160

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