67382-39-2

Basic information

• Product Name: Cyclopentanone, 2-pentylidene-, (2E)-
• CAS NO: 67382-39-2
• Molecular Formula: C10H16O
• Molecular Weight: 152.236
• Mol File: 67382-39-2.mol
• Article Data: 5

Chemical Properties

• CAS DataBase Reference: Cyclopentanone, 2-pentylidene-, (2E)-(CAS DataBase Reference)
• NIST Chemistry Reference: Cyclopentanone, 2-pentylidene-, (2E)-(67382-39-2)
• EPA Substance Registry System: Cyclopentanone, 2-pentylidene-, (2E)-(67382-39-2)

Safety Data

• Hazardous Substances Data: 67382-39-2(Hazardous Substances Data)

Upstream product

• 4819-67-4 2-pentyl-cyclopentanone 
• 110-62-3 pentanal 
• 120-92-3 cyclopentanone 
• 108349-13-9 2-pentyl-1,5-bis(ethylsulfinyl)-3-pentanone 
• 83135-35-7 allyl 1-pentyl-2-oxocyclopentanecarboxylate 

Downstream Products

• 4819-67-4 2-pentyl-cyclopentanone 
• 25564-22-1 2-pentyl-2-cyclopenten-1-one 
• 84962-44-7 methyl (2Z)-3-oxo-2-pentylidenecyclopentaneacetate 
• 84962-44-7 methyl (2E)-3-oxo-2-pentylidenecyclopentaneacetate 
• 878564-23-9 (6E)-6-pentylidene-1,4-dioxaspiro[4.4]nonane 

Relevant articles and documents

Cycloalkanone composition

The present invention relates to a cycloalkanone composition which contains cycloalkanone (1) in an amount of 70 wt% or more based on the composition, wherein the content of a dimer of a cycloalkanone represented by formula (2) is 0.055 or less in terms of weight ratio to the cycloalkanone (1), a process for producing the same, a process for producing a composition containing alkyl acetate (5) by using the cycloalkanone composition, and an alkyl acetate composition obtained by the process wherein n is an integer of 1 or 2, R1 and R2 each represent H, a C1 to C8 alkyl group etc., and R3 represents a C1 to C3 alkyl group.

S-Alkyl-4-oxothianium Ions for the Synthesis of Cyclopentenones. Acid-Catalyzed Cyclization of Divinyl Ketones

A new approach to 2-cyclopentenones via an acidic cyclization of divinyl ketones by the use of S-alkyl-4-oxothianium ions as key compounds is described.

Conversion of 2-alkylcyclopentanones into 2-alkyl-2-cyclopentenones with hydrated ferric chloride and cupric chloride

Hydrated ferric chloride, FeCl3*6H2O, in a polar, hydroxylic solvent converted 2-alkylcyclopentanones directly into 2-alkyl-2-cyclopentenones on heating in the presence of air.Yields of isolated products were about 40 percent.The scope of the reaction is discussed.With cupric chloride, chloroketones were formed as intermediates, which could be dehydrochlorinated to 2-alkyl-2-cyclopentenones in similar yields.