Their preparation involves an alkylation of an aromatic ring, for example, such as a Friedel-Crafts alkylation with 4-bromomethyl-3,5-dibromo-2,6-dimethylphenol or with 4-hydroxymethyl-3,5-dibromo-2,6-dimethylphenol.メンドザアベルフリッツ...
arenesalkenylationalkylationC−H activationpalladiumTo expand the scope of meta‐functionalization, a pyrimidine‐based template effective for the formation of β‐aryl aldehydes and ketones, using allyl alcohols, by meta‐C?H activation of benzylsulfonyl esters is described. In addition, α,β‐...
The alkylation of toluene with methanol on microporous heteropoly oxometalates. J. Catal., 1989, 116, 480-487. [http://dx.doi.org/10.1016/0021-9517(89)90114-0]The alkylation of toluene with methanol on microporous heteropoly oxometalates. H. Nishi K. Nowinska and J. B. Moffat. ...
alkylation catalyst; (2) allowing the cumene and propylene in the feed stream to react together to produce a first mixture of para-diisopropylbenzene and meta-diisopropylbenzene; (3) fractionally distilling the mixture of para-diisopropylbenzene and meta-diisopropylbenzene in a fractional ...
A process for producing an alkylated aromatic product having high selectivity to the thermodynamically preferred isomer by contacting meta- xylene and a C.sub.13 to C.sub.20 alpha-olefinic compound at a reaction temperature of about 40° to about 80° C. in the presence of a catalyst ...
The isopropylation of large molecules like meta DIPB (Diisopropylbenzene) is a reaction wherein the formation of isomeric DIPB s & isomeric TIPB s (Triisopropylbenzene) signify the pore dimensions and the structural properties. Thus isomerization is the major reaction in Hß, whereas isomerization...
Their preparation involves an alkylation of an aromatic ring, for example, such as a Friedel-Crafts alkylation with 4-bromomethyl-3,5-dibromo-2,6-dimethylphenol or with 4-hydroxymethyl-3,5-dibromo-2,6-dimethylphenol.
A Pd/norbornene-catalyzed direct meta -alkylationof nosyl-protected phenylalanine derivatives with alkyl iodides isreported in moderate to good yields. The use of diisopropyl bicyclo[2.2.1]-hept-5-ene-2,3-dicarboxylateis identified as a more suitable transient mediator. A simple pyridineligand is ...
Alkylation of metaxylene with isobutylene using a solid active clay catalyst produces 5-tert-butyl-metaxylene with high isomer selectivity with respect to 4-tert-butyl-metaxylene. The process is controlled to extend catalyst life and significantly reduce environmentally unfriendly waste....
Meta-Selective C–H Alkylation of 2-Phenylpyridine Catalyzed by Ruthenium: DFT Study on the Mechanism and RegioselectivityTransition-metal-catalyzedC–H activationWheland-likeDensity functional theory calculations have been performed to quantitatively characterize ruthenium-catalyzed meta-selective C–H ...