296-56-0

Basic information

• Product Name: cycloicosane
• Synonyms: cycloicosane
• CAS NO: 296-56-0
• Molecular Formula: C₂₀H₄₀
• Molecular Weight: 280.53
• Mol File: 296-56-0.mol

Chemical Properties

• Boiling Point: 358.24°C (rough estimate)
• Flash Point: 176.7°C
• Appearance: /
• Density: 0.8464
• Vapor Pressure: 7.47E-06mmHg at 25°C
• Refractive Index: 1.4664
• CAS DataBase Reference: cycloicosane(CAS DataBase Reference)
• NIST Chemistry Reference: cycloicosane(296-56-0)
• EPA Substance Registry System: cycloicosane(296-56-0)

Safety Data

• Hazardous Substances Data: 296-56-0(Hazardous Substances Data)

Usage

InChI:InChI=1/C20H40/c1-2-4-6-8-10-12-14-16-18-20-19-17-15-13-11-9-7-5-3-1/h1-20H2

Upstream product

• 6568-73-6 cycloeicosa-1,3,11,13-tetrayne 
• 58681-04-2 1,7-Cycloeicosadiin 
• 14113-56-5 1,10-cycloeicosanedione 
• 7129-73-9 trans-trans-Cycloeicosadien-(1,11)-tetrain-(5,7,15,17) 
• 4277-04-7 cycloeicosa-1,11-diyne 
• 4570-13-2 Bis-dehydro-<20>annulen, Cycloeicosaoctaen-(1,3,5,7,11,13,15,17)-diin-(9,19) 
• 7129-57-9 cycloeicosa-1,3,7,11,13,17-hexayne 
• 20448-19-5 all-trans-Cycloeikosatrien-(1,7,13)-tetrain-(4,10,16,18) 
• 3227-78-9 <20> Annulen, Cycloeicosa-decaen-(1,3,5,7,9,11,13,15,17,19) 
• 6568-71-4 1,11-Cycloeicosadiene 
• 293-96-9 cyclodecane 
• 292-64-8 Cyclooctan 

Relevant articles and documents

Cyclooctane metathesis catalyzed by silica-supported tungsten pentamethyl [(ΞSiO)W(Me)5]: Distribution of macrocyclic alkanes

Metathesis of cyclic alkanes catalyzed by the new surface complex [(ΞSiO)W(Me)5] affords a wide distribution of cyclic and macrocyclic alkanes. The major products with the formula CnH2n are the result of either a ring contraction or ring expans

Catalytic ring expansion, contraction, and metathesis-polymerization of cycloalkanes

Tandem dehydrogenation-olefin-metathesis catalyst systems, comprising a pincer-ligated iridium-based alkane dehydrogenation catalyst and a molybdenum-based olefin-metathesis catalyst, are reported to effect the metathesis-cyclooligomerization of cyclooctane and cyclodecane to give cycloalkanes with various carbon numbers, predominantly multiples of the substrate carbon number, and polymers. The Royal Society of Chemistry.

A Simple Synthesis of Macrocyclic Hydrocarbons by Metathesis of Cycloolefins

Metathesis of cycloolefins normally leads to unsaturated polymers.Using rheniumheptoxide on alumina, activated by tintetramethyl and working in dilution via soxhlet-similiar circulation system the metathesis reaction was directed to macrocyclic dienes, which are the dimers of the initial cyclolefins.Starting with C7-, C9- and C10-cycloolefins symmetric macrocyclic C14-, C18- and C20-dienes are obtained in yields of 58-74percent.The metathetic dimerization of cyclooctene leads to 1,9-cyclohexadecadiene in a yield of 30percent.By hydrogenation at room temperature and normalhydrogen-pressure all cyclodienes were converted quantitatively to cycloalkenes (catalyst: potassium on alumina) or to cycloalkanes (catalyst: palladium on carbon).