51806-23-6

Basic information

• Product Name: dimethyl (3-oxo-2-pentylcyclopentyl)malonate
• Synonyms: dimethyl (3-oxo-2-pentylcyclopentyl)malonate;(3-oxo-2-pentylcyclopentyl)-,dimethyl ester;3-Oxo-2-pentylcyclopentylmalonic acid dimethyl ester;Einecs 257-434-0;Propanedioic acid, (3-oxo-2-pentylcyclopentyl)-, dimethyl ester;Propanedioic acid, 2-(3-oxo-2-pentylcyclopentyl)-, 1,3-dimethyl ester
• CAS NO: 51806-23-6
• Molecular Formula: C₁₅H₂₄O₅
• Molecular Weight: 284.34806
• EINECS: 257-434-0
• Mol File: 51806-23-6.mol
• Article Data: 8

Chemical Properties

• Boiling Point: 360.5°Cat760mmHg
• Flash Point: 155°C
• Appearance: /
• Density: 1.075g/cm³
• Vapor Pressure: 2.21E-05mmHg at 25°C
• Refractive Index: 1.465
• CAS DataBase Reference: dimethyl (3-oxo-2-pentylcyclopentyl)malonate(CAS DataBase Reference)
• NIST Chemistry Reference: dimethyl (3-oxo-2-pentylcyclopentyl)malonate(51806-23-6)
• EPA Substance Registry System: dimethyl (3-oxo-2-pentylcyclopentyl)malonate(51806-23-6)

Safety Data

• Hazardous Substances Data: 51806-23-6(Hazardous Substances Data)

Usage

General Description

Dimethyl (3-oxo-2-pentylcyclopentyl)malonate is a chemical compound belonging to the category of esters. Esters are organic compounds that are derived from acids in which at least one -OH (hydroxyl) group is replaced by an -O-alkyl (alkoxy) group. Specific information regarding the physical properties, hazards, or uses of Dimethyl (3-oxo-2-pentylcyclopentyl)malonate may not readily be available. As with all chemicals, handling this compound would require necessary safety measures, especially if it's intended for use in a laboratory or manufacturing environment.

InChI:InChI=1/C15H24O5/c1-4-5-6-7-10-11(8-9-12(10)16)13(14(17)19-2)15(18)20-3/h10-11,13H,4-9H2,1-3H3

Upstream product

• 16424-35-4 2-pentylidenecyclopentan-1-one 
• 628-71-7 1-Heptyne 
• 110-53-2 1-Bromopentane 
• 42558-01-0 2-(1-hydroxypentyl)-cyclopentanone 
• 110-62-3 pentanal 
• 120-92-3 cyclopentanone 
• 25564-22-1 2-pentyl-2-cyclopenten-1-one 
• 108-59-8 malonic acid dimethyl ester 
• 611-10-9 2-ethoxycarbonyl-1-cyclopentanone 
• 24852-03-7 2-Ethoxycarbonyl-2-pentyl-1-cyclopentanone 
• 4819-67-4 2-pentyl-cyclopentanone 
• 24851-93-2 2-pentylcyclopent-1-en-1-yl acetate 
• 18424-76-5 dimethyl malonate sodium salt 

Downstream Products

• 24851-98-7 methyl 3-oxo-2-pentylcyclopentaneacetate 
• 67-56-1 methanol 
• 3572-64-3 2-(3-oxy-2-pentylcyclopentyl)acetic acid 
• 2570-03-8 (+/-)-methyl dihydroepijasmonate 
• 2630-39-9 methyl dihydro jasmonate 
• 151716-36-8 trans-methyl ((1S,2S)-2-pentyl-3-oxocyclopentyl)acetate 

Relevant articles and documents

Preparation method of 3-(3-oxo-2-pentyl) cyclopentyl dimethyl malonate

The invention relates to a preparation method of 3-(3-oxo-2-pentyl) cyclopentyl dimethyl malonate. The preparation method of the 3-(3-oxo-2-pentyl) cyclopentyl dimethyl malonate comprises the following step: in the presence of a transition metal complex and a catalytic additive, reacting 2-pentyl-2-cyclopentenone with dimethyl malonate in a reaction solvent to obtain the 3-(3-oxo-2-pentyl) cyclopentyl dimethyl malonate. According to the preparation method provided by the invention, a sodium methoxide strong base catalyst is not needed, the generation of salt-containing wastewater is avoided, the method is environment-friendly and high in yield, and meanwhile, the recycling of the catalyst is realized.

Method of manufacturing methylcyclopentanone deriv. (by machine translation)

PROBLEM TO BE SOLVED: To provide an efficient method for producing a cyclopentanone derivative usable as an intermediate for a methyl (3-oxocyclopentyl)acetate derivative useful as a perfumery material.SOLUTION: The method for producing the cyclopentanone derivative expressed by general formula (III) comprises Michael addition reaction of a 2-cyclopenten-1-one derivative and an ester compound in the presence of a solid base catalyst containing a phosphazene base or a guanidine base. In the formula, Ris a 1-10C hydrocarbon group; Ris 1-4C alkyl; and Ris 1-4C alkyl or alkoxyl.

METHOD FOR PRODUCING OF 2-ALKYL-2-CYCLOALKEN-1-ONE

The present invention relates to [1] a process for producing a 2-alkyl-2-cycloalken-1-one represented by the following general formula (2), which includes the step of subjecting a 2-(1-hydroxyalkyl)cycloalkan-1-one to dehydration and isomerization in the co-existence of an acid and a platinum group metal catalyst, and [2] a process for producing an alkyl(3-oxo-alkylcycloalkyl)acetate which is useful as a perfume material, using the 2-alkyl-2-cycloalken-1-one: wherein n is an integer of 1 or 2; and R1 and R2 are each independently a hydrogen atom or an alkyl group having 1 to 8 carbon atoms with the proviso that R1 and R2 may form a ring through a carbon atom adjacent thereto.