7385-78-6

Basic information

• Product Name: 3,4-DIMETHYL-1-PENTENE
• Synonyms: 3,4-DIMETHYL-1-PENTENE;(CH3)2CHCH(CH3)CH=CH2;3,4-dimethyl-pent-1-ene;1-Pentene, 3,4-dimethyl-;Nsc74137
• CAS NO: 7385-78-6
• Molecular Formula: C₇H₁₄
• Molecular Weight: 98.19
• Mol File: 7385-78-6.mol
• Article Data: 3

Chemical Properties

• Melting Point: -124.4°C (estimate)
• Boiling Point: 80.8°C
• Appearance: /
• Density: 0.6934
• Vapor Pressure: 97.9mmHg at 25°C
• Refractive Index: 1.3965
• CAS DataBase Reference: 3,4-DIMETHYL-1-PENTENE(CAS DataBase Reference)
• NIST Chemistry Reference: 3,4-DIMETHYL-1-PENTENE(7385-78-6)
• EPA Substance Registry System: 3,4-DIMETHYL-1-PENTENE(7385-78-6)

Safety Data

• Hazardous Substances Data: 7385-78-6(Hazardous Substances Data)

Usage

InChI:InChI=1/C7H14/c1-5-7(4)6(2)3/h5-7H,1H2,2-4H3

Upstream product

• 7417-49-4 3,4-dimethyl-penta-1,2-diene 
• 513-35-9 2-methyl-but-2-ene 
• 624-64-6 trans-2-Butene 
• 15464-00-3 azobisisopropane 
• 565-59-3 2,3-dimethyl pentane 

Downstream Products

• 3601-65-8 2,3,4-trimethyl-pentanal 
• 1364488-38-9 C₈H₁₆O 

Relevant articles and documents

Coordinated olefins as incipient carbocations: Catalytic codimerization of ethylene and internal olefins by a dicationic Pt(II)-ethylene complex

The coordinated ethylene molecule in the dicationic complex [(PNP)Pt(CH2=CH2)](BF4)2 (PNP = 2,6-bis(diphenylphosphinomethyl)pyridine) undergoes nucleophilic attack by free internal alkenes, giving the isolable c

CYCLIZATION OF C7-ALKANES OVER Pt BLACK CATALYST

C6-and C5-cyclization of heptane isomers (and also, olefin formation as a related process) over Pt-black have been studied in pulse and circulation systems.Hydrogendeficient conditions favour aromatization, via presumably terminal olefins.C5-Cyclization in the presence of more hydrogen is accompanied by internal olefin formation.Relative reactivities of all heptane isomers have been measured; this shows that cyclization is easier between terminal methyl groups.Optimum hydrogen pressures for both types of cyclization have been determined (and compared with hydrogenolysis, too).Earlier mechanism suggestion for aromatization and cyclopentane formation have been confirmed; the distinction between two types of bond shift mechanisms producing aromatics (from substituted pentanes) and saturated isomers, respectively, has recieved additional support facilitating the identification of these two reactions with mechanisms proposed in the literature.