3097-60-7

Basic information

• Product Name: 8-oxatricyclo[4.3.0.0~2,5~]non-3-ene-7,9-dione
• CAS NO: 3097-60-7
• Molecular Formula: C₈H₆O₃
• Molecular Weight: 150.1314
• Mol File: 3097-60-7.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 324.4°C at 760 mmHg
• Flash Point: 163.3°C
• Density: 1.515g/cm³
• Vapor Pressure: 0.000247mmHg at 25°C
• Refractive Index: 1.612
• CAS DataBase Reference: 8-oxatricyclo[4.3.0.0~2,5~]non-3-ene-7,9-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 8-oxatricyclo[4.3.0.0~2,5~]non-3-ene-7,9-dione(3097-60-7)
• EPA Substance Registry System: 8-oxatricyclo[4.3.0.0~2,5~]non-3-ene-7,9-dione(3097-60-7)

Safety Data

• Hazardous Substances Data: 3097-60-7(Hazardous Substances Data)

Upstream product

• 1515-19-1 cis-cyclohexa-3,5-diene-1,2-dicarboxylic anhydride 
• 5675-13-8 trans-cyclohexa-3,5-diene-1,2-dicarboxylic acid 
• 88-99-3 benzene-1,2-dicarboxylic acid 

Downstream Products

• 30168-20-8 C₂₂H₂₄O₆S₂ 

Relevant articles and documents

Unveiling a Masked Polymer of Dewar Benzene Reveals trans-Poly(acetylene)

A dibromo derivative of Dewar benzene, trans-5,6-dibromobicyclo[2.2.0]hex-1-ene, was polymerized using ring-opening metathesis polymerization (ROMP). The reaction proceeded in a controlled manner as changing the initial monomer-to-catalyst ratio afforded monodispersed polymers with tunable molecular weights and growing polymer chains were extended upon subsequent exposure to additional monomer. Treatment of the halogenated polymers with an alkyllithium reagent resulted in elimination followed by isomerization to afford trans-poly(acetylene). Based on a series of mechanistic and spectroscopic studies, the transformation was proposed to proceed through a cyclobutenyl intermediate that undergoes rearrangement. The methodology was found to be versatile as triblock copolymers containing the halogenated homopolymer were prepared and converted to their poly(acetylene)-containing derivatives. The polymers were characterized using gel permeation chromatography as well as a range of spectroscopic (NMR, FT-IR, UV-vis, and Raman) and analytical techniques.