5682-82-6

Basic information

• Product Name: 2,5-Dicyclopentylidenecyclopentane-1-one
• Synonyms: 2,5-Dicyclopentylidene-1-cyclopentanone;2,5-Dicyclopentylidenecyclopentane-1-one
• CAS NO: 5682-82-6
• Molecular Formula: C₁₅H₂₀O
• Molecular Weight: 216.32
• Mol File: 5682-82-6.mol
• Article Data: 3

Chemical Properties

• Melting Point: 82 °C
• Boiling Point: 170 °C(Press: 5 Torr)
• Appearance: /
• Density: 1.147±0.06 g/cm3(Predicted)
• CAS DataBase Reference: 2,5-Dicyclopentylidenecyclopentane-1-one(CAS DataBase Reference)
• NIST Chemistry Reference: 2,5-Dicyclopentylidenecyclopentane-1-one(5682-82-6)
• EPA Substance Registry System: 2,5-Dicyclopentylidenecyclopentane-1-one(5682-82-6)

Safety Data

• Hazardous Substances Data: 5682-82-6(Hazardous Substances Data)

Usage

General Description

2,5-Dicyclopentylidenecyclopentane-1-one is a chemical compound with the molecular formula C15H22O. It is an unsaturated ketone, meaning it contains a carbon-oxygen double bond, and it has a unique structure with two cyclopentylidene rings. 2,5-Dicyclopentylidenecyclopentane-1-one is used as a building block in organic synthesis and can be used to create a variety of other compounds through chemical reactions. Its specific properties and potential applications may vary depending on the specific context and purpose for which it is being used. Overall, 2,5-Dicyclopentylidenecyclopentane-1-one is a versatile compound with potential uses in various chemical processes and applications.

Upstream product

• 141-52-6 sodium ethanolate 
• 120-92-3 cyclopentanone 
• 60-29-7 diethyl ether 
• 107-05-1 3-chloroprop-1-ene 

Downstream Products

• 77189-02-7 2,5-dicyclopentylcyclopentan-1-ol 

Relevant articles and documents

Controllable self-aldol condensation of cyclopentanone over MgO-ZrO2 mixed oxides: Origin of activity & selectivity

Mesoporous MgO-ZrO2 mixed oxides with different Mg/Zr ratios have been synthesized by a coprecipitation method and employed to catalyze self-aldol condensation of cyclopentanone in a solvent-free condition under atmospheric pressure. Effects of temperature, reaction time, catalyst amount and Mg/Zr ratio on the reaction have been investigated. Remarkable raise in catalytic activity and selectivity has been found on MgO-ZrO2 mixed oxides as compared with pure MgO or ZrO2. Characterization including XRD, XPS, BET and CO2- TPD has been carried out to figure out the relationship between catalyst properties and their catalytic activity.

Highly efficient Nb2O5 catalyst for aldol condensation of biomass-derived carbonyl molecules to fuel precursors

Aldol condensation is of significant importance for the production of fuel precursors from biomass-derived chemicals and has received increasing attention. Here we report a Nb2O5 catalyst with excellent activity and stability in the aldol condensation of biomass-derived carbonyl molecules. It is found that in the aldol condensation of furfural with 4-heptanone, Nb2O5 has obviously superior activity, which is not only better than that of other common solid acid catalysts (ZrO2 and Al2O3), more importantly, but also better than that of solid base catalysts (MgO, CaO, and magnesium-aluminum hydrotalcite). The detailed characterizations by N2 sorption/desorption, NH3-TPD, Py-FTIR and DRIFTS study of acetone adsorption reveal that Nb2O5 has a strong ability to activate the C=O bond in carbonyl molecules, which helps to generate a metal enolate intermediate and undergo the nucleophilic addition to form a new C–C bond. Furthermore, the applicability of Nb2O5 to aldol condensation is extended to other biomass-derived carbonyl molecules and high yields of target fuel precursors are obtained. Finally, a multifunctional Pd/Nb2O5 catalyst is prepared and successfully used in the one-pot synthesis of liquid alkanes from biomass-derived carbonyl molecules by combining the aldol condensation with the sequential hydrodeoxygenation.