5194-50-3

Basic information

• Product Name: 2,4-HEXADIENE
• Synonyms: TRANS-2 TRANS-4-HEXADIENE;TRANS,TRANS-2,4-HEXADIENE;(2Z,4E)-2,4-Hexadiene;(E),(Z)-CH3CH=CHCH=CHCH3;(E,Z)-2,4-Hexadiene;(Z,E)-2,4-Hexadiene;2,4-hexadiene,(E,Z)-;2-cis-4-trans-hexadiene
• CAS NO: 5194-50-3
• Molecular Formula: C₆H₁₀
• Molecular Weight: 82.14
• EINECS: 225-979-3
• Mol File: 5194-50-3.mol
• Article Data: 27

Chemical Properties

• Melting Point: -96.1°C
• Boiling Point: 82 °C(lit.)
• Flash Point: 7 °F
• Appearance: /
• Density: 0.72 g/mL at 25 °C(lit.)
• Vapor Pressure: 96.4mmHg at 25°C
• Refractive Index: n20/D 1.445(lit.)
• CAS DataBase Reference: 2,4-HEXADIENE(CAS DataBase Reference)
• NIST Chemistry Reference: 2,4-HEXADIENE(5194-50-3)
• EPA Substance Registry System: 2,4-HEXADIENE(5194-50-3)

Safety Data

• Hazard Codes: F,Xi
• Statements: 11-36/37/38
• Safety Statements: 16-26-36
• RIDADR: UN 2458 3/PG 2
• WGK Germany: 3
• HazardClass: 3.1
• PackingGroup: II
• Hazardous Substances Data: 5194-50-3(Hazardous Substances Data)

Usage

General Description

2,4-Hexadiene, also known as hexa-1, 3-diene, is a chemical compound with the molecular formula C6H10. It is a colorless liquid with a strong, unpleasant odor. 2,4-Hexadiene is commonly used as a solvent and as a chemical intermediate in the production of various other chemicals. It is also used in the manufacturing of polymers and resins. 2,4-Hexadiene is highly flammable and may cause irritation to the skin and eyes upon contact. It is important to handle and store this chemical with care to prevent accidents and exposure.

InChI:InChI=1/C6H10/c1-3-5-6-4-2/h3-6H,1-2H3/b5-3-,6-4-

Upstream product

• 1517-14-2 cis-3,4-dimethyl-1-cyclobutene 
• 4798-58-7 (E)-hex-4-en-3-ol 
• 821-07-8 (E)-1,3,5-hexatriene 
• 592-42-7 1,5-Hexadien 
• 123-73-9 trans-Crotonaldehyde 
• 1754-88-7 ethylenetriphenylphosphorane 
• 592-41-6 1-hexene 
• 110678-34-7 (E)-(2R,3S)-3-Acetoxy-2-methyl-hex-4-enoic acid methyl ester 
• 110678-34-7 (E)-(2S,3S)-3-Acetoxy-2-methyl-hex-4-enoic acid methyl ester 
• 110678-35-8 (E)-(2R,5R)-5-Acetoxy-2-methyl-hex-3-enoic acid methyl ester 
• 110678-35-8 (E)-(2R,5S)-5-Acetoxy-2-methyl-hex-3-enoic acid methyl ester 
• 174611-57-5 cis-2,5-dimethyl-3-cyclopentenone 
• 5685-46-1 bicyclopropyl 
• 6108-61-8 cis,cis-2,4-Hexadien 

Downstream Products

• 21268-77-9 (+/-)-3c,6t-dimethyl-cyclohex-4-ene-1r,2c-dicarboxylic acid 
• 5194-51-4 (2E,4E)-hexa-2,4-diene 
• 118160-40-0 C₁₈H₂₀O₂SSe 
• 118160-40-0 C₁₈H₂₀O₂SSe 
• 86120-35-6 (3R,6R)-3,6-Dimethyl-1-oxo-3,6-dihydro-1H-1λ⁴-[1,2]thiazine-2-carboxylic acid benzyl ester 
• 128632-61-1 trans-3,6-Dimethyl-2,2-diphenyl-3,6-dihydro-2H-selenapyran 
• 128632-61-1 cis-3,6-Dimethyl-2,2-diphenyl-3,6-dihydro-2H-selenapyran 
• 3839-88-1 di-p-tolylsulfur diimide 
• 126396-32-5 trans-(+/-)-2-(p-tolyl)-3,6-dimethyl-3,6-dihydro-2H-1,2-thiazine 
• 126396-32-5 cis-(+/-)-2-(p-tolyl)-3,6-dimethyl-3,6-dihydro-2H-1,2-thiazine 
• 501-60-0 1,2-di(p-tolyl)diazene 
• 3839-86-9 bis(p-bromophenyl)sulfur diimide 
• 126396-30-3 trans-(+/-)-2-(4-bromophenyl)-3,6-dimethyl-3,6-dihydro-2H-1,2-thiazine 
• 126396-30-3 cis-(+/-)-2-(4-bromophenyl)-3,6-dimethyl-3,6-dihydro-2H-1,2-thiazine 

Relevant articles and documents

ADDITION VON VINYL- UND ALLYL-TITAN-BINDUNGEN AN ETHYLEN

Reaction of Cp2TiCl (1) with the alkylmagnesium halides 2a-2d, 2g (alkyl = Me, Et, Pr, iso-Pr, hexyl) and ethylene give bis(η5-cyclopentadienyl)(η3-1-methylallyl)titanium (3).Mechanistic investigations indicate that hydrogen transfer from ethylene either to the initially formed Cp2alkytitanium or to Cp2ethyltitanium, formed by βH-elimination to Cp2titaniumhydride and addition to ethylene, leads to liberation of alkane or alkene and ethane and formation of Cp2vinyltitanium F as an intermediate.Insertion to ethylene (even below 0 deg C) into the vinyl-titanium bond of F leads to Cp23-butenyltitanium, which isomerizes to 3.Reaction of 3 at ca. 80 deg C with ethylene in toluene occurs in part with hydrogen transfer to give the butene isomers 4, 5 and F and in part with addition of the allyl-titanium bond to ethylene to give the 2,4-hexadiene isomers 6a-6c by βH-elimination.The compounds 6a-6c are also formed in the catalytic codimerization of butadiene with ethylene in the presence of 3.This reaction has a regioselectivity of above 99percent.

Synthesis of p-xylene from ethylene

As oil supplies dwindle, there is a growing need to develop new routes to chemical intermediates that utilize alternative feedstocks. We report here a synthesis of para-xylene, one of the highest volume chemicals derived from petroleum, using only ethylene as a feedstock. Ethylene is an attractive alternative feedstock, as it can be derived from renewable biomass resources or harnessed from large domestic shale gas deposits. The synthesis relies on the conversion of hexene (from trimerization of ethylene) to 2,4-hexadiene followed by a Diels-Alder reaction with ethylene to form 3,6-dimethylcyclohexene. This monoene is readily dehydrogenated to para-xylene uncontaminated by the ortho and meta isomers. We report here a selective synthesis of para-xylene, uncontaminated by the ortho or meta isomers, using ethylene as the sole feedstock.

SYNTHESIS OF PARA-XYLENE AND TOLUENE

A method of making para-xylene or toluene is carried out by: (a) reacting a C5 or C6 linear monoene (itself, or formed from a C5 or C6 linear alkane) with a hydrogen acceptor in the presence of a hydrogen transfer catalyst to produce a C5 or C6 diene; (b) reacting the C5-C6 diene with ethylene to produce a cyclohexene having 1 or 2 methyl groups substituted thereon; and then (c) either (i) dehydrogenating the cyclohexene in the presence of a hydrogen acceptor with a hydrogen transfer catalyst to produce a compound selected from the group consisting of para-xylene and toluene, or (ii) dehydrogenating the cyclohexene in the absence of a hydrogen acceptor with a dehydrogenation catalyst, to produce para-xylene or toluene.