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

• 5312-85-6 2-(but-3-en-1-yl)-5-methylfuran 
• 90428-62-9 3-acetoxy-2-allyl-3-methyl-4-cyclopentenone 
• 53121-21-4 3-(2-methanesulfinyl-1-methyl-2-methylsulfanyl-ethyl)-3-methylsulfanyl-hex-5-en-2-one 
• 61229-33-2 C₁₉H₃₀O₄ 
• 75565-74-1 3-allyl-4-methyl-4,5-epoxypentan-2-one 
• 75565-77-4 2,4-dimethyl-3-allylfuran 
• 75565-72-9 3-isopropenyl-hex-5-en-2-one 
• 1119-51-3 bromopentene 
• 23542-51-0 5-nitropent-1-ene 
• 77119-59-6 3-allyl-4-methyl-5-nitro-3-phenylthio-2-pentanone 
• 65755-66-0 3-phenylthiohex-5-ene-2-one 
• 77087-32-2 Dimethyl 2-(2-propynyl)-3-oxoglutarate 
• 77087-22-0 3-Hydroxy-8-nonyne-2,5-dione 
• 22499-95-2 2-Allyl-3-methyl-cyclopenten-⁽²⁾-dion-(1,4) 

Downstream Products

• 260359-57-7 bioallethrin 
• 3972-20-1 allethrin I 
• 93107-48-3 2-methyl-3-allyl-4-oxocyclopent-2-enyl endo-tricyclo<5.2.1.0^2,6>decane-exo-2-carboxylate 
• 93107-48-3 2-methyl-3-allyl-4-oxocyclopent-2-enyl exo-tricyclo<5.2.1.0^2,6>decane-endo-2-carboxylate 
• 5469-04-5 3-Methyl-but-2-enoic acid 3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester 
• 102553-39-9 β,β-Dimethyl-tropasaeure-allethrolonylester 
• 51629-24-4 2-(3-Methoxy-phenyl)-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 
• 51631-00-6 3-Methyl-2-(2-methyl-cyclohex-1-enyl)-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 
• 51630-16-1 2-p-Tolyl-butyric acid 3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester 
• 102171-75-5 β-Methyl-tropasaeure-allethrolonylester 
• 102472-14-0 3-Benzyl-isovaleriansaeure-allethrolonylester 
• 584-79-2 (+/-)(1Ξ)-cis-chrysanthemumic acid-((Ξ)-3-allyl-2-methyl-4-oxo-cyclopent-2-enyl ester) 

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 producing 4-cyclopentenones

A 4-cyclopentenone of the formula: STR1 wherein R is a lower alkyl group, a lower alkenyl group or a lower alkynyl group and R' is a hydroxyl group or an aliphatic acyloxy group, provided that in case of the dl-form, R' is not a hydroxyl group and also that the substituent R at the 2-position and the methyl group at the 3-position take a cis-configuration in the dl-, d- or l-form.