56561-57-0

Basic information

• Product Name: Cyclohepta-3,6-diene-1,2,5-trione
• Synonyms: Cyclohepta-3,6-diene-1,2,5-trione;p-Tropoquinone
• CAS NO: 56561-57-0
• Molecular Formula: C₇H₄O₃
• Molecular Weight: 136.1
• Mol File: 56561-57-0.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 248.4°C at 760 mmHg
• Flash Point: 100.4°C
• Appearance: /
• Density: 1.357g/cm³
• Vapor Pressure: 0.0242mmHg at 25°C
• Refractive Index: 1.548
• CAS DataBase Reference: Cyclohepta-3,6-diene-1,2,5-trione(CAS DataBase Reference)
• NIST Chemistry Reference: Cyclohepta-3,6-diene-1,2,5-trione(56561-57-0)
• EPA Substance Registry System: Cyclohepta-3,6-diene-1,2,5-trione(56561-57-0)

Safety Data

• Hazardous Substances Data: 56561-57-0(Hazardous Substances Data)

Usage

Synthesis Reference(s)

Tetrahedron Letters, 16, p. 1075, 1975 DOI: 10.1016/S0040-4039(00)72061-2

InChI:InChI=1/C7H4O3/c8-5-1-3-6(9)7(10)4-2-5/h1-4H

Upstream product

• 67-56-1 methanol 
• 15852-34-3 2,5-dihydroxycyclohepta-2,4,6-trien-1-one 

Downstream Products

• 15852-34-3 2,5-dihydroxycyclohepta-2,4,6-trien-1-one 
• 88396-03-6 3-(p-Tolyl)-7H-cyclohepta-1,2,4-triazin-7-on 
• 82832-99-3 2,10-dihydroxydicycloheptafuran-3,9-dione 
• 125309-54-8 2,3-diphenylcycloheptapyrazino<2,3-g>quinoxalin-9-one 
• 344763-55-9 3-Phenyl-7H-cyclohepta-1,2,4-triazin-7-on-oxim 
• 88396-02-5 3-Phenyl-7H-cyclohepta-1,2,4-triazin-7-on 

Relevant articles and documents

The Cerium(IV) Ammonium Nitrate Oxidation of 5-Hydroxy-2-methoxytropone to Bitropolonyl Derivatives and One-Step Synthesis of 3-Methoxy-p-tropoquinone

Unlike the benzenoid equivalent, p-methoxyphenol, the cerium(IV) ammonium nitrate (CAN)-oxidation of 5-hydroxy-2-methoxytropone gave C-C coupling products.On the other hand, either by thallium(III) nitrate (TTN) or CAN at 50 deg C, 5-hydroxytropolone, a free tropolone, gave 3-methoxy-p-tropoquinone together with p-tropoquinone and 8-oxabicyclooctenone derivatives, but no dimeric product.