130468-61-0

Basic information

• Product Name: 2-methoxy-2-phenyl-4-methyl-1,3-dioxol-4-ene
• Synonyms: 2-methoxy-2-phenyl-4-methyl-1,3-dioxol-4-ene
• CAS NO: 130468-61-0
• Molecular Weight: 192.214
• Mol File: 130468-61-0.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2-methoxy-2-phenyl-4-methyl-1,3-dioxol-4-ene(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methoxy-2-phenyl-4-methyl-1,3-dioxol-4-ene(130468-61-0)
• EPA Substance Registry System: 2-methoxy-2-phenyl-4-methyl-1,3-dioxol-4-ene(130468-61-0)

Safety Data

• Hazardous Substances Data: 130468-61-0(Hazardous Substances Data)

Upstream product

• 67-56-1 methanol 
• 112270-91-4 1-propynyl benzoate 

Relevant articles and documents

Cyclization of alkynyl benzoates and generation of dioxolenylium ions

Reactions of l-ethynyl benzoates RC≡CO2CC6H4X in H2O and CH3OH have been studied. In neutral H2O, reaction rates for CH3C≡CO2CC6H4X depend on σp of X with p of 1.3. Reaction of CH3C≡CO2CPh (1) in 18O-labeled H2O gives CH3CH2CO2H and PhCO2H in 54% relative yield with 90 and 83%, respectively, incorporation of a single 18O in the acids and CH3COCH2O2CPh (2) in 46% relative yield with 100% incorporation of 18O in both carbonyl oxygens. These results arc explained by the hypothesis that at least 46% of 1 reacts by cyclization to an intermediate 2-hydroxy-1,3-dioxolene 18. Mcthanolysis of 1 and other alkynyl benzoates gives 2-methoxy-1,3-dioxolenes, confirming the cyclization pathway. Reaction in 44% H2SO4 of 2-methoxy-2-phenyl-4-tert-butyl-1,3-dioxol-4-ene (8), prepared in this way, gives the 2-phenyl-4-tert-butyl-1,3-dioxol-4-enylium cation (16), directly observable by UV, which hydrolyzes to t-BuCOCH2O2CPh (12).