33143-15-6

Basic information

• Product Name: (2-ethylbut-1-en-1-yl)benzene
• Synonyms: (2-Ethylbut-1-en-1-yl)benzene; benzene, (2-ethyl-1-buten-1-yl)-
• CAS NO: 33143-15-6
• Molecular Formula: C₁₂H₁₆
• Molecular Weight: 160.2554
• Mol File: 33143-15-6.mol
• Article Data: 7

Chemical Properties

• Boiling Point: 229.2°C at 760 mmHg
• Flash Point: 86.2°C
• Density: 0.891g/cm³
• Vapor Pressure: 0.107mmHg at 25°C
• Refractive Index: 1.534
• CAS DataBase Reference: (2-ethylbut-1-en-1-yl)benzene(CAS DataBase Reference)
• NIST Chemistry Reference: (2-ethylbut-1-en-1-yl)benzene(33143-15-6)
• EPA Substance Registry System: (2-ethylbut-1-en-1-yl)benzene(33143-15-6)

Safety Data

• Hazardous Substances Data: 33143-15-6(Hazardous Substances Data)

Upstream product

• 6006-71-9 2-ethyl-2-phenylbutan-1-ol 
• 10035-10-6 hydrogen bromide 
• 1593772-82-7 2-ethyl-1-phenyl-2-(phenylsulfonyl)but-1-yl benzoate 
• 813436-63-4 (pentan-3-ylsulfonyl)benzene 
• 100-52-7 benzaldehyde 
• 98-88-4 benzoyl chloride 
• 28495-72-9 4-methyl-N’-(pentan-3-ylidene)-benzenesulfonohydrazide 
• 100-39-0 benzyl bromide 
• 97-96-1 2-Ethylbutyraldehyde 
• 96-22-0 pentan-3-one 
• 14655-73-3 N,N,N',N'-tetramethyldiamide of phenylmethanephosphonic acid 
• 1449-46-3 benzyltriphenylphosphonium bromide 
• 1083-98-3 diisopropyl benzylphosphonate 
• 74-83-9 methyl bromide 

Downstream Products

• 106591-63-3 (+/-)-2,2-diethyl-3t-phenyl-cyclopropane-r-carboxylic acid 
• 41979-19-5 2-ethyl-1,2-epoxy-1-phenyl-butane 
• 96-22-0 pentan-3-one 
• 65-85-0 benzoic acid 
• 33121-48-1 α-Brom-β,β-diaethylstyrol 
• 33131-57-6 3-ethyl-2-phenylpent-2-enoic acid 

Relevant articles and documents

Divergent reactivity of alkyl aryl sulfones with bases: Selective functionalization of ortho-aryl and α-alkyl units enabled by a unique carbanion transmetalation

The electron-accepting sulfonyl group exhibits a strong acidifying influence on neighboring α-H atoms. The Julia and related olefinations are based on this effect. Here a surprising reversal in the metalation selectivity of branched alkyl aryl sulfones is described. Such sulfones were found to initially undergo directed ortho-metalation with good regioselectivity, despite having a more acidic α-H atom. The structure of the alkyl unit profoundly, but predictably, influences the regioselectivity of the attack of the base. In β- and γ-branched ortho-(alkylsulfonyl)aryllithiums a transmetalation to the α-carbanion proceeds only upon warming. Correspondingly generated ortho- or α-carbanions were then selectively applied thus permitting access to synthetically interesting compound classes. An unusual lithiation selectivity and subsequent transfer of the metal upon warming was observed for various branched alkyl phenyl sulfones. This divergent reactivity was used to prepare substituted aryl sulfones as well as olefins by application of the Julia reaction. Copyright

Pd-catalyzed C=C double-bond formation by coupling of N-tosylhydrazones with benzyl halides

Pd-catalyzed reaction of N-tosylhydrazones with benzyl halides affords di- and trisubstituted olefins In high yields with excellent stereoselectivity. This coupling reaction Is supposed to proceed through a migratory insertion of Pd carbene species.

OLEFIN SYNTHESIS VIA THE LITHIUM DERIVATIVE OF THE N,N,N',N'-TETRAMETHYLDIAMIDES OF ARYLMETHANEPHOSPHONIC ACIDS. 3. SYNTHESYS OF SOME β-DISUBSTITUTED STYRENES

The reaction of Li-derivatives of N,N,N',N'-tetramethyldiamides of arylmethanephosphonic acids (1-Li) with alkanones, cycloalkanones, alkylaryl- and diarylketones 2a-h is studied.It is found that in THF at -70 deg C adducts 3-Li and 4-Li are formed, the corresponding hydroxyl compounds 3 and 4 being isolated in 36-81percent yields, while by elevated temperatures the reaction is completely shifted to the starting 1-Li and 2.By thermolysis of 3 and 4 in neutral medium olefins 5 and 6 are obtained even from readily enolysable ketones.The stereochemistry of the addition reaction with nonsymmetrical ketones as well as the influence of the substituents at the carbonyl groups on the conformation and adsorption properties of the adducts are discussed.