16424-35-4

Basic information

• Product Name: 2-pentylidenecyclopentan-1-one
• Synonyms: 2-pentylidenecyclopentan-1-one;2-Pentylidenecyclopentanone;Cyclopentanone,2-pentylidene-;Einecs 240-477-4;Pentylidene-2-cyclopentanone
• CAS NO: 16424-35-4
• Molecular Formula: C₁₀H₁₆O
• Molecular Weight: 152.23344
• EINECS: 240-477-4
• Mol File: 16424-35-4.mol
• Article Data: 17

Chemical Properties

• Boiling Point: 240.6 °C at 760 mmHg
• Flash Point: 96.7 °C
• Appearance: /
• Density: 1.001 g/cm³
• Vapor Pressure: 0.0376mmHg at 25°C
• Refractive Index: 1.544
• CAS DataBase Reference: 2-pentylidenecyclopentan-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2-pentylidenecyclopentan-1-one(16424-35-4)
• EPA Substance Registry System: 2-pentylidenecyclopentan-1-one(16424-35-4)

Safety Data

• Hazardous Substances Data: 16424-35-4(Hazardous Substances Data)

Usage

Synthesis Reference(s)

The Journal of Organic Chemistry, 43, p. 4248, 1978 DOI: 10.1021/jo00415a061

InChI:InChI=1/C10H16O/c1-2-3-4-6-9-7-5-8-10(9)11/h6H,2-5,7-8H2,1H3

Upstream product

• 124-04-9 Adipic acid 
• 110-62-3 pentanal 
• 120-92-3 cyclopentanone 
• 936-52-7 1-(N-morpholino)cyclopent-1-ene 
• 1352617-33-4 2-pentylpent-1-enyl t-butyldimethylsilyl ether 
• 42558-01-0 2-(1-hydroxypentyl)-cyclopentanone 

Downstream Products

• 24851-98-7 methyl 3-oxo-2-pentylcyclopentaneacetate 
• 51806-23-6 methyl 1-carboxymethyl-1-(2-pentyl-3-oxocyclopentyl)acetate 
• 39647-11-5 <2S*,3R*>-3-methoxycarbonylmethyl-2-pentylcyclopentanone(methyl dihydroepijasmonate) 
• 84168-28-5 (Z)-5-decenoic acid 
• 16424-55-8 (E)-dec-5-enoic acid 
• 34687-45-1 2-pentenyl cyclopentanone 
• 25564-22-1 2-pentyl-2-cyclopenten-1-one 
• 4819-67-4 2-pentyl-cyclopentanone 

Relevant articles and documents

Aldol Condensation of Cyclopentanone with Valeraldehyde Over Metal Oxides

Kinetics of the cross aldol condensation of valeraldehyde with cyclopentanone was investigated in a batch reactor under atmospheric pressure at 130?°C using heterogeneous metal modified oxides, such as CeO2–MgO, FeO–MgO, FeO–CaO as well as pristine CaO as catalysts. The catalysts were prepared either by evaporation impregnation or deposition precipitation methods and characterized by XRD, TEM, SEM, nitrogen adsorption, ammonia and CO2 TPD. The results revealed that an optimum amount of strong basic sites gives the highest ratio between cross condensation and self-condensation products of valeraldehyde. The highest yield of the desired product 2-pentylidenecyclopentanone (66%) was obtained with FeO–MgO prepared by the deposition precipitation methods. Graphical Abstract: Cross-condensation of valeraldehyde with cyclopentanone was investigated over heterogeneous Fe–CaO, CeO–MgO, FeO–CaO and CaO catalysts at 130?°C using cyclopentanone as a solvent and reactant. The highest yield of the desired product, 2-pentylidene-cyclopentanone, finding applications as fragrances, flavours and pharmaceuticals, was 66% obtained over FeO–MgO catalyst exhibiting both acid and basic sites.[Figure not available: see fulltext.].

Dihydro(dialkylamino)jasmonate compound or salt thereof

The invention relates to a dihydro(dialkylamino)jasmonate compound or salt thereof. The dihydro(dialkylamino)jasmonate compound is shown as a formula (1); the formula (1) is shown in the description;in the formula (1), n is an integer from 1 to 9; R1 is -CH3, -CH2CH3 or -CH2CH2CH3; R2 is -CH3, -CH2CH3 or -CH2CH2CH3. According to the dihydro(dialkylamino)jasmonate compound or the salt thereof, thestress resistance of plants can be remarkably improved and the yield is increased; the dihydro(dialkylamino)jasmonate compound or the salt thereof belongs to the technical field of organic synthesis,can be applied to a plant growth regulator and is convenient to use, so that the dihydro(dialkylamino)jasmonate compound or the salt thereof has an extremely wide application prospect.

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.