1121-33-1

Basic information

• Product Name: 2,4-DIMETHYLCYCLOPENTANONE
• Synonyms: dl-2,4-Dimethylcyclopentanone,c&t;2,4-DIMETHYLCYCLOPENTANONE
• CAS NO: 1121-33-1
• Molecular Formula: C₇H₁₂O
• Molecular Weight: 112.17
• Mol File: 1121-33-1.mol
• Article Data: 5

Chemical Properties

• Boiling Point: 154.8°Cat760mmHg
• Flash Point: 41.7°C
• Appearance: /
• Density: 0.895g/cm³
• Vapor Pressure: 3.12mmHg at 25°C
• Refractive Index: 1.434
• CAS DataBase Reference: 2,4-DIMETHYLCYCLOPENTANONE(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-DIMETHYLCYCLOPENTANONE(1121-33-1)
• EPA Substance Registry System: 2,4-DIMETHYLCYCLOPENTANONE(1121-33-1)

Safety Data

• RIDADR: 1993
• HazardClass: 3.2
• PackingGroup: III
• Hazardous Substances Data: 1121-33-1(Hazardous Substances Data)

Usage

General Description

2,4-Dimethylcyclopentanone is a chemical compound with the molecular formula C7H12O. It is a cyclic ketone that is derived from cyclopentanone, with two methyl groups attached to the 2 and 4 positions of the cycloalkane ring. 2,4-DIMETHYLCYCLOPENTANONE is used as a fragrance ingredient and flavoring agent in various products, including perfumes, cosmetics, and food items. It has a sweet, fruity odor and is known for its low toxicity. 2,4-Dimethylcyclopentanone is also used in organic synthesis and as a building block for the production of other chemicals and pharmaceuticals.

InChI:InChI=1/C7H12O/c1-5-3-6(2)7(8)4-5/h5-6H,3-4H2,1-2H3/t5-,6-/m0/s1

Upstream product

• 931-22-6 3,5-dimethyl-2-cyclopenten-1-one 
• 7214-50-8 5-methylcyclohex-2-en-1-one 
• 17946-71-3 lithium trimethylstannyl 
• 1120-72-5 2-Methylcyclopentanone 
• 74-88-4 methyl iodide 
• 128946-89-4 (+)-(1Ξ,4R)-4-methyl-2-oxo-cyclopentanecarboxylic acid methyl ester 
• 14963-40-7 5-methylcyclopent-2-en-1-one 
• 2748-11-0 3,5-dimethyl-cyclohexane-1,2-dione 
• 871884-38-7 1-hydroxy-2,4-dimethyl-cyclopentanecarboxylic acid 

Downstream Products

• 104550-67-6 1-ethynyl-2,4-dimethyl-cyclopentanol 
• 99182-92-0 1-(1-hydroxy-2,4-dimethyl-cyclopentyl)-ethanone 
• 132142-78-0 (2R,3R)-2-(1-Benzenesulfonyl-1H-pyrrol-2-yl)-1-[2-(dimethyl-hydrazono)-butyl]-3,5-dimethyl-cyclopentanol 
• 132142-77-9 1-[(4S,5R)-5-(1-Benzenesulfonyl-1H-pyrrol-2-yl)-2,4-dimethyl-cyclopent-1-enyl]-butan-2-one 
• 132142-68-8 3,5-dimethyl-2-(1-phenylsulfonyl-2-pyrrolyl)cyclopentanone 
• 132142-70-2 (2R,3R)-2-(1-Benzenesulfonyl-1H-pyrrol-2-yl)-1-[2-(dimethyl-hydrazono)-hex-5-enyl]-3,5-dimethyl-cyclopentanol 
• 132142-86-0 2-[(2R,3R)-2-(1-Benzenesulfonyl-1H-pyrrol-2-yl)-1-hydroxy-3,5-dimethyl-cyclopentyl]-hex-5-enal 
• 132142-82-6 1-[(4S,5R)-5-(1-Benzenesulfonyl-1H-pyrrol-2-yl)-2,4-dimethyl-cyclopent-1-enyl]-hex-5-en-2-one 
• 132142-80-4 1-[(4S,5R)-5-(1-Benzenesulfonyl-1H-pyrrol-2-yl)-2,4-dimethyl-cyclopent-1-enyl]-hexan-2-one 
• 132142-75-7 3,5-dimethyl-2-(1-phenylsulfonyl-2-pyrrolyl)cyclopentanone ethylene acetal 
• 104262-24-0 2,4-Dimethyl-1-p-tolylcyclopentane 
• 74421-27-5 2,4-Dimethyl-1-phenylcyclopentane 
• 690224-56-7 4a,6-dimethyl-octahydro-[1]pyrindine 

Relevant articles and documents

Regioselective synthesis of 2,2-dimethylcyclopentanone using 2-pyrrolidone magnesium salt as electrogenerated base

An efficient, direct and regioselective preparation of 2,2-dimethylcyclopentanone, via its enolate precursor regioselectively obtained using the 2-pyrrolidone magnesium salt, a base electrogenerated in DME/HMPA, is reported.

Chemo- and Stereo-selective Preparation of Cyclopentanone Derivatives from Cyclohexenones using Trimethylstannyl-lithium as a Key Reagent

Upon treatment with trimethylsilyl trifluoromethane-sulphonate, β-stannylcyclohexanones afforded cyclopentanones chemo- and stereo-selectively.

CUPRATE ADDITIONS TO 5-METHOXYCYCLOPENTENONES: A NOVEL STEREOELECTRONIC EFFECT

Cuprate additions to 5-methoxy-2-cyclopentenone have been found to proceed with moderate to extremely high diastereofacial selectivity, depending upon the specific cuprate and reaction protocol employed.Comparisons with related 5-substitued cyclopentenones suggest that the observed selectivity is not simply steric in nature, but instead reflects a novel stereoelectronic effect.