42205-57-2

Basic information

• Product Name: methyl 3-oxocyclohept-1-ene-1-carboxylate
• Synonyms: 3-(Methoxycarbonyl)-2-cycloheptenone
• CAS NO: 42205-57-2
• Molecular Formula: C₉H₁₂O₃
• Molecular Weight: 168.1898
• Mol File: 42205-57-2.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 253.8°C at 760 mmHg
• Flash Point: 106.9°C
• Density: 1.124g/cm³
• Vapor Pressure: 0.0179mmHg at 25°C
• Refractive Index: 1.486
• CAS DataBase Reference: methyl 3-oxocyclohept-1-ene-1-carboxylate(CAS DataBase Reference)
• NIST Chemistry Reference: methyl 3-oxocyclohept-1-ene-1-carboxylate(42205-57-2)
• EPA Substance Registry System: methyl 3-oxocyclohept-1-ene-1-carboxylate(42205-57-2)

Safety Data

• Hazardous Substances Data: 42205-57-2(Hazardous Substances Data)

Upstream product

• 42205-56-1 6-Oxo-cyclohept-1-enecarboxylic acid methyl ester 

Relevant articles and documents

Medium-Ring Systems. 5. Synthesis and Base-Catalyzed Isomerizations of Medium-Ring Cycloalkenones with Electron-Withdrawing Substituents

Medium-ring 3-cycloalkenones with electron-withdrawing substituents at the 3-position have been synthesized and subjected to base-catalyzed isomerizations.In a given ring size in the seven- and eight-membered carbocycles, the substituents studied caused similar shifts in the equilibria toward the 3-cycloalkenones relative to the unsubstituted cases.Steric effects of the substituents are therefore not significant.As the ring size is increased, the preference for the 3-cycloalkenone becomes more pronounced.In the nine- and ten-membered systems, an additional equilibrium involving formation of 4-cycloalkenones appears.Decreased effectiveness of conjugative interactions in endocyclic dienolates and in 2-cycloalkenones with increasing ring size is suggested.