77889-64-6

Basic information

• Product Name: 2H-1-Benzopyran-2-one,3,4-dihydroxy-
• CAS NO: 77889-64-6
• Molecular Weight: 178.144
• Mol File: 77889-64-6.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2H-1-Benzopyran-2-one,3,4-dihydroxy- (CAS DataBase Reference)
• NIST Chemistry Reference: 2H-1-Benzopyran-2-one,3,4-dihydroxy- (77889-64-6)
• EPA Substance Registry System: 2H-1-Benzopyran-2-one,3,4-dihydroxy- (77889-64-6)

Safety Data

• Hazardous Substances Data: 77889-64-6(Hazardous Substances Data)

Upstream product

• 86795-49-5 3-(phenyl-λ³-iodanylidene)chromane-2,4-dione 
• 64-19-7 acetic acid 

Downstream Products

• 37571-01-0 4-hydroxy-3-methoxycoumarin 
• 33562-07-1 2-hydroxy-2-methylbenzofuran-3(2H)-one 
• 117375-43-6 methyl 2-hydroxy-3-oxo-2,3-dihydrobenzofuran-2-carboxylate 
• 119-36-8 methyl salicylate 
• 34073-46-6 methyl 2-(2-hydroxyphenyl)-2-oxo-acetate 
• 120-80-9 benzene-1,2-diol 

Relevant articles and documents

Ylides of Heterocycles, VIII. Reactions of Iodonium-Ylides with Acids

The reaction of various organic and inorganic acids (HX) with iodonium ylides 2 leads to nucleophilic substitution of the iodobenzene substituent by the anion X(-) to yield the heterocycles 5.Some of them are hydrolyzed to the hydroxy compounds 3 or reduced to the starting compounds 1 under the reaction conditions.Reaction of the iodonium ylide 2b with monomethyl sulfate gives the salt 9, which with bases undergoes nucleophilic substitution to compounds 8 and 10-12, respectively, or is converted to 2b again. - Keywords: 3-Acetoxy-4-hydroxy-2-quinolones; 2-Oxoquinoline-4-olates; 3-Substituted 4-hydroxy-2-quinolones