551-45-1

Basic information

• Product Name: 4-hydroxy-3-methyl-2-prop-2-enyl-cyclopent-2-en-1-one
• Synonyms: 4-hydroxy-3-methyl-2-prop-2-enyl-cyclopent-2-en-1-one;1-Methyl-2-allyl-5-hydroxycyclopentene-3-one;2-Allyl-3-methyl-4-hydroxy-2-cyclopenten-1-one;Allethrolon
• CAS NO: 551-45-1
• Molecular Formula: C₉H₁₂O₂
• Molecular Weight: 0
• Mol File: 551-45-1.mol
• Article Data: 13

Chemical Properties

• Appearance: /
• CAS DataBase Reference: 4-hydroxy-3-methyl-2-prop-2-enyl-cyclopent-2-en-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 4-hydroxy-3-methyl-2-prop-2-enyl-cyclopent-2-en-1-one(551-45-1)
• EPA Substance Registry System: 4-hydroxy-3-methyl-2-prop-2-enyl-cyclopent-2-en-1-one(551-45-1)

Safety Data

• Hazardous Substances Data: 551-45-1(Hazardous Substances Data)

Usage

General Description

4-hydroxy-3-methyl-2-prop-2-enyl-cyclopent-2-en-1-one, also known as 4-hydroxy-3-methyl-2-propenyl-2-cyclopenten-1-one, is a chemical compound with the molecular formula C10H12O2. It is a yellow solid with a fruity odor and is commonly used as a flavoring agent in the food industry. It is found in a variety of natural sources, including strawberries, barley, and beer, and has been identified as a component of the aroma of some fruits and vegetables. Additionally, it has been shown to have antioxidant and antimicrobial properties and may have potential applications in the pharmaceutical and cosmetic industries.

Upstream product

• 61906-51-2 2-but-3-enyl-2,5-dimethoxy-5-methyl-2,5-dihydro-furan 
• 80350-56-7 3-hydroxy-8-nonene-2,5-dione 
• 53121-22-5 3-acetyl-2-methyl-3-methylsulfanyl-hex-5-enal 
• 41301-27-3 (RS)4-hydroxy-3-methyl-2-(2-propynyl)cyclopent-2-ene-1-one 
• 3972-20-1 allethrin I 
• 89100-12-9 3-Allyl-2,5-dimethoxy-2,4-dimethyl-2,5-dihydro-furan 
• 82781-73-5 3-(3'-butenyl)-5-acetyl-2-isoxazoline 
• 77119-57-4 3-acetyl-2-methyl-3-phenylthio-5-hexenal 
• 22499-95-2 2-Allyl-3-methyl-cyclopenten-⁽²⁾-dion-(1,4) 
• 77087-22-0 3-Hydroxy-8-nonyne-2,5-dione 
• 77087-32-2 Dimethyl 2-(2-propynyl)-3-oxoglutarate 
• 65755-66-0 3-phenylthiohex-5-ene-2-one 
• 77119-59-6 3-allyl-4-methyl-5-nitro-3-phenylthio-2-pentanone 
• 23542-51-0 5-nitropent-1-ene 

Downstream Products

• 54225-41-1 phthalic acid mono-(3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester) 
• 96170-90-0 (+/-)(1Ξ)-2,2-dimethyl-3t-phenyl-cyclopropane-r-carboxylic acid-((Ξ)-3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester) 
• 102448-89-5 (+/-)(1Ξ)-3t-(4-chloro-phenyl)-2,2-dimethyl-cyclopropane-r-carboxylic acid-((Ξ)-3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester) 
• 584-79-2 (1RS)-trans-chrysanthemumic acid-((RS)-3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester) 
• 584-79-2 allethrin 
• 584-79-2 (+/-)(1Ξ)-cis-chrysanthemumic acid-((Ξ)-3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester) 
• 102472-14-0 3-Benzyl-isovaleriansaeure-allethrolonylester 
• 102171-75-5 β-Methyl-tropasaeure-allethrolonylester 
• 51630-16-1 2-p-Tolyl-butyric acid 3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester 
• 51630-84-3 2-Cyclohex-1-enyl-3-methyl-butyric acid 3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester 
• 51631-00-6 3-Methyl-2-(2-methyl-cyclohex-1-enyl)-butyric acid 3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester 
• 51628-64-9 2-(4-Acetyl-phenyl)-pent-4-enoic acid 3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester 
• 51629-24-4 2-(3-Methoxy-phenyl)-butyric acid 3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester 
• 102553-39-9 β,β-Dimethyl-tropasaeure-allethrolonylester 

Relevant articles and documents

One-pot transformation of simple furans into 4-Hydroxy-2-cyclopentenones in water

A highly efficient one-pot transformation of readily accessible furans into 4-hydroxy-2-cyclopentenones in H2O, using singlet oxygen as oxidant, has been developed.

Process for preparing 4-hydroxy-2-cyclopentenones

A process for producing a compound of the formula: STR1 wherein R1 is a hydrogen atom, an alkyl group or an alkenyl group and R2 is an alkyl group, an alkenyl group or an alkynyl group, which comprises treating a compound of the formula: STR2 wherein R1 and R2 are each as defined above and R is a hydrogen atom or a lower alkyl group in the presence of an acidic substance and water.

Process for preparing cyclopentenolones

A process for preparing cyclopentenolones of the formula STR1 wherein R1 is an alkyl group having not more than 6 carbon atoms, an alkenyl or 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 directly from the corresponding furan-carbinols of the formula: STR3 wherein R1 is as defined above in a single step with an excellent yield, characterized in that the furan-carbinols are treated with water in the presence or absence of a catalyst.