77806-60-1

Basic information

• Product Name: 4-Hydroxy-4-methyl-5-(2-propenyl)-2-cyclopenten-1-one
• Synonyms: 4-Hydroxy-4-methyl-5-(2-propenyl)-2-cyclopenten-1-one
• CAS NO: 77806-60-1
• Molecular Formula: C₉H₁₂O₂
• Molecular Weight: 0
• Mol File: 77806-60-1.mol
• Article Data: 5

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 4-Hydroxy-4-methyl-5-(2-propenyl)-2-cyclopenten-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4-Hydroxy-4-methyl-5-(2-propenyl)-2-cyclopenten-1-one(77806-60-1)
• EPA Substance Registry System: 4-Hydroxy-4-methyl-5-(2-propenyl)-2-cyclopenten-1-one(77806-60-1)

Safety Data

• Hazardous Substances Data: 77806-60-1(Hazardous Substances Data)

Upstream product

• 90428-62-9 3-acetoxy-2-allyl-3-methyl-4-cyclopentenone 
• 65223-07-6 2-(1-hydroxy-3-butenyl)-5-methylfuran 
• 5137-55-3 Aliquat 336 
• 77806-59-8 4-keto-5-allyl-2cyclopentenone 
• 74-88-4 methyl iodide 

Downstream Products

• 551-45-1 allethrolone 

Relevant articles and documents

Process for preparing oxocyclopentene derivatives

A process for preparing oxocyclopentenes of the formula: STR1 wherein R1 is hydrogen, lower alkyl or lower alkenyl and R2 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl, substituted or unsubstituted aryl, ar(lower)alkyl, thienyl or cycloalkyl, which comprises subjecting a furan-carbinol of the formula: STR2 wherein R1 is as defined above and R3 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl, substituted or unsubstituted aryl, ar(lower)alkyl, thienyl or cycloalkyl to rearrangement, subjecting the resultant hydroxycyclopentenone of the formula: STR3 wherein R1 and R3 are each as defined above to hydrogenation and subjecting the resulting hydroxycyclopentanone of the formula; STR4 wherein R1 and R2 are each as defined above to dehydration.

Process for preparing 2-cyclopentenone derivatives

A novel process for preparing 2-cyclopentenones of the formula: STR1 wherein R1 is hydrogen, alkyl or alkenyl and R2 is alkyl, alkenyl, alkynyl, cycloalkyl, aryl or aralkyl, which comprises esterifying a mixture of a 3-hydroxy-4-cyclopentenone of the formula: STR2 wherein R1 and R2 are each as defined above and a 4-hydroxy-2-cyclopentenone of the formulas: STR3 wherein R1 and R2 are each as defined above with an aliphatic carboxylic acid to give a mixture of the 4-hydroxy-2-cyclopentenone (III) and the cyclopentenone ester of the formula: STR4 wherein R1 and R2 are each as defined above and R is hydrogen or C1 -C4 alkyl and subjecting the resulting mixture to reduction.

Process for producing 3-oxocyclopentenes

A process for producing 3-oxocyclopentenes which comprises treating a furan-carbinol of the formula: STR1 wherein R1 is an alkyl group having not more than 6 carbon atoms, an alkenyl group having not more than 6 carbon atoms, an alkynyl group having not more than 6 carbon atoms or a group of the formula: STR2 in which R2 is a hydrogen atom, a methyl group or a halogen atom in an aqueous medium in the presence or absence of a catalyst at a pH of 3 to 6.5 to give the corresponding 3-oxocyclopentene of the formula: STR3 wherein R1 is as defined above.