69898-48-2

Basic information

• Product Name: 2-methoxy-3,5-dimethylcyclopent-2-en-1-one
• Synonyms: 2-methoxy-3,5-dimethylcyclopent-2-en-1-one;2-Methoxy-3,5-dimethyl-2-cyclopenten-1-one
• CAS NO: 69898-48-2
• Molecular Formula: C₈H₁₂O₂
• Molecular Weight: 140.17968
• EINECS: 274-198-4
• Mol File: 69898-48-2.mol
• Article Data: 2

Chemical Properties

• Boiling Point: 228.3°C at 760 mmHg
• Flash Point: 94.7°C
• Appearance: /
• Density: 1g/cm³
• Vapor Pressure: 0.0742mmHg at 25°C
• Refractive Index: 1.462
• CAS DataBase Reference: 2-methoxy-3,5-dimethylcyclopent-2-en-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2-methoxy-3,5-dimethylcyclopent-2-en-1-one(69898-48-2)
• EPA Substance Registry System: 2-methoxy-3,5-dimethylcyclopent-2-en-1-one(69898-48-2)

Safety Data

• Hazardous Substances Data: 69898-48-2(Hazardous Substances Data)

Usage

InChI:InChI=1/C8H12O2/c1-5-4-6(2)8(10-3)7(5)9/h5H,4H2,1-3H3

Upstream product

• 127663-17-6 methyl 4-methoxy-2-acetonyl-2-methylacetoacetate 
• 497-19-8 sodium carbonate 
• 14189-85-6 2-methoxy-3-methylcyclopent-2-en-1-one 
• 80-71-7 2-hydroxy-3-methylcyclopent-2-en-1-one 
• 92243-49-7 5-Formyl-2-methoxy-3-methyl-cyclopent-2-en-1-on 
• 74-88-4 methyl iodide 

Downstream Products

• 21834-98-0 2-hydroxy-3,5-dimethyl-2-cyclopenten-1-one 

Relevant articles and documents

Acetoacetic acid ester derivatives for the manufacture of α-hydroxycarbonyl compounds

The invention is concerned with a novel process for the manufacture of compounds of the formula STR1 wherein R1 signifies C1-5 -alkyl, especially methyl, ethyl, propyl or isopropyl, and the radicals R2 each independently represent hydrogen or C1-5 -alkyl, especially hydrogen or methyl, ethyl, propyl or isopropyl. The process is characterized in that a compound of the formula STR2 wherein R stands for C1-4 -alkoxy, chlorine, bromine or C1-4 -alkanoyloxy, R1 and R2 have the above significance and R3 represents C1-4 -alkyl. is hydrolyzed and subjected to an aldol condensation and, where R=C1-4 -alkoxy, the reaction product is subsequently subjected to an acid treatment. The compounds I are for the most part known flavoring substances.