1985-97-3

Usage

InChI:InChI=1/C12H18/c1-4-12(3,5-2)11-9-7-6-8-10-11/h6-10H,4-5H2,1-3H3

Upstream product

• 74-85-1 ethene 
• 135-98-8 sec-Butylbenzene 
• 918-84-3 3-chloro-3-methylpentane 
• 71-43-2 benzene 
• 77-74-7 3-methylpentan-3-ol 
• 1985-92-8 (1-ethyl-1-bromomethyl-propyl)-benzene 
• 35078-49-0 (1-ethyl-1-chloropropyl)benzene 
• 676-58-4 methylmagnesium chloride 
• 563-80-4 3-methyl-butan-2-one 
• 2747-38-8 methyltrichlorotitanium 
• 96-14-0 3-methylpentane 
• 696-29-7 (1-methylethyl)-cyclohexane 
• 7664-39-3 hydrogen fluoride 
• 7446-70-0 aluminium trichloride 

Downstream Products

• 860557-19-3 1-(1-ethyl-1-methyl-propyl)-4-nitro-benzene 
• 30784-25-9 4-(1-ethyl-1-methyl-propyl)-phenol 
• 873386-82-4 4-(1-ethyl-1-methyl-propyl)-aniline 

Relevant academic research and scientific papers

Alkylation of alkyl aromatic hydrocarbons over metal oxide-alkali metal superbasic catalysts

The alkylation of toluene, ethylbenzene, cumene, and o-, m-, and p-xylenes with ethylene, propylene, and 1,2-diphenylethylene was studied over superbasic MgO-K and γ-Al2O3-K catalysts and over model systems of the electron donor acceptor complex type. The ethylation and propylation of alkylbenzenes indicated that the donor power and the concentration of the one-electron donor centers were not the only factors, which determined the activity (depicted by the initial reaction rate, turnover number, or alkylbenzene conversion) and selectivity of the catalytic system. In the series of reactions, a higher total conversion of alkyl aromatic hydrocarbons to their ethylation or propylation products was achieved over γ-Al2O3-K systems. The reaction chemoselectivity (mono- or difunctionalization of alkylbenzenes) depended on the nature of the alkyl aromatic reactant and alkylating alkene, on the reaction temperature, and on the used catalyst.

ALKYLATION NON CONVENTIONNELLE DE FRIEDEL ET CRAFTS DES AROMATIQUES PAR LES ISO ET CYCLOALCANES INDUITE PAR LES CHLORURES-SELECTIVITE ET OPTIMISATION

Friedel-Crafts alkylation of benzene by C5-C8 isoalkanes induced by tert-butyl chloride affords good yields in the presence of small amounts of AlCl3.The isomeric alkylbenzenes prepared by hydride transfer are similar to those obtained by direct alkylation from the corresponding equivalent alcohols and chlorides.The kinetic tertiary alkyl benzene rearranges to a more stable secondary isomer ; the formation of isomers discussed.Fragmentation of isoalkanes (when any) is very small except with isooctane which gives only a tert-butyl-cation.The reaction may be extended to toluene, chlorobenzene and dichlorobenzene with no major change in selectivity i.e. trans vs direct alkylation.An optimization of the reaction using dichlorobenzene increases significantly conversion and selectivity in trans-alkylation product and stresses the importance of low temperature (ca. 40 deg C) and small amounts of catalyst.