3721-64-0

Basic information

• Product Name: 1-methylideneoctahydrodicyclopropa[cd,gh]pentalene
• Synonyms: Dicyclopropa(cd,gh)pentalene, octahydro-1-methylene-
• CAS NO: 3721-64-0
• Molecular Formula: C₉H₁₀
• Molecular Weight: 118.1757
• Mol File: 3721-64-0.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 153.1°C at 760 mmHg
• Flash Point: 31°C
• Density: 1.17g/cm³
• Vapor Pressure: 4.34mmHg at 25°C
• Refractive Index: 1.608
• CAS DataBase Reference: 1-methylideneoctahydrodicyclopropa[cd,gh]pentalene(CAS DataBase Reference)
• NIST Chemistry Reference: 1-methylideneoctahydrodicyclopropa[cd,gh]pentalene(3721-64-0)
• EPA Substance Registry System: 1-methylideneoctahydrodicyclopropa[cd,gh]pentalene(3721-64-0)

Safety Data

• Hazardous Substances Data: 3721-64-0(Hazardous Substances Data)

Upstream product

• 1779-49-3 Methyltriphenylphosphonium bromide 
• 78638-81-0 endo-3-methylidenetricyclo<3.2.1.0^2,4>oct-6-ene 
• 51788-41-1 3-bromo-2,6-bicyclo<3.2.1>octatriene 

Relevant articles and documents

212. Synthesis and Thermal Behaviour of exo-3-Methylidenetricyclo2,4>oct-6-ene

The title compound 3 has been prepared in 16percent yield starting from 8,9,10-trinorborna-2,5-diene.Heating 3 at 140 deg for 4 h does not give triafulvene and cyclopentadiene by Diels-Alder cycloreversion, instead the tetracyclic compound 10 has been isolated (81percent), which is presumably formed via the diradical 11.