89607-88-5

Basic information

• Product Name: 4,11-Dihydroxy-5,10-dioxo-2-phenyl-5,10-dihydro-1-oxa-cyclopenta[b]anthracene-3-carboxylic acid ethyl ester
• CAS NO: 89607-88-5
• Molecular Weight: 428.398
• Mol File: 89607-88-5.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 4,11-Dihydroxy-5,10-dioxo-2-phenyl-5,10-dihydro-1-oxa-cyclopenta[b]anthracene-3-carboxylic acid ethyl ester(CAS DataBase Reference)
• NIST Chemistry Reference: 4,11-Dihydroxy-5,10-dioxo-2-phenyl-5,10-dihydro-1-oxa-cyclopenta[b]anthracene-3-carboxylic acid ethyl ester(89607-88-5)
• EPA Substance Registry System: 4,11-Dihydroxy-5,10-dioxo-2-phenyl-5,10-dihydro-1-oxa-cyclopenta[b]anthracene-3-carboxylic acid ethyl ester(89607-88-5)

Safety Data

• Hazardous Substances Data: 89607-88-5(Hazardous Substances Data)

Upstream product

• 29525-00-6 2,3-dichloro-1,4-dihydroxyanthracene-9,10-dione 
• 94-02-0 ethyl 3-oxo-3-phenylpropionate 
• 99562-95-5 2,3-dibromoquinizarine 
• 81-64-1 1,4-dihydroxy-9,10-anthracenedione 

Relevant articles and documents

Heterocyclic analogs of 5,12-naphthacene-quinone. 12. synthesis of 2-substituted derivatives of 4,11-dimethoxy-5,10-dioxo- anthra[2,3-b]furan-3- carboxylic acids

The synthesis of anthrafurandiones, by means of which it is possible to obtain a series of previously unknown 2-substituted derivatives of 4,11-dimethoxy-5,10-dioxoanthra[2,3-b]furan-3-carboxylic acids after protection of the hydroxy groups of the initial 2,3-dibromoquinizarin, was optimized. Unlike most of the analogs, 4,11-dimethoxy-5,10-dioxo-2-(trifluoromethyl) anthra[2,3-b]furan-3-carboxylic acid ester is best synthesized from 2,3-dibromoquinizarin with subsequent methylation of the hydroxy groups. The heterocyclic ring of this ester was found to have low stability during the action of alkalis. This, together with the side deacetylation of the intermediate, is probably the main reason for its low yield at the heterocyclization stage.