6031-02-3Relevant articles and documents
A New Preparation Method for the Alkylation Catalysts of Aromatic Compounds Based on Immobilized AlCl3
Bykov,Belyaev
, p. 328 - 330 (2021/04/26)
Abstract: A new method for the preparation of active catalysts for the alkylation and transalkylation of aromatic compounds (benzene and toluene) based on aluminum chloride immobilized on the surface of silica gel was developed. The alkylation occurred wi
New Heterogeneous Alkylation Catalysts Based on Niobium Pentachloride
Bykov,Belyaev,Butenko
, p. 688 - 689 (2018/10/02)
New active catalysts based on niobium pentachloride immobilized on the surface of silica gel or aluminum oxide for the alkylation of aromatic compounds were prepared. The reaction occurs with a high rate at room temperature. Thus, the conversion of 1-hexene in the alkylation of benzene or toluene was close to 100% only 5 min after the onset of the reaction.
Heterogeneous Catalytic Hydroarylation of Olefins at a Nanoscopic Aluminum Chlorofluoride
Calvo, Beatriz,Wuttke, Jan,Braun, Thomas,Kemnitz, Erhard
, p. 1945 - 1950 (2016/07/06)
We report on hydroarylation reactions of arenes with olefins under very mild conditions catalyzed heterogeneously by aluminum chlorofluoride (ACF; AlClxF3?x, x≈0.05–0.25). The reactions of benzene and toluene with ethylene or propylene proceed with high conversions to afford various alkylated arenes. For cyclohexene and 1-hexene, the reactions require higher temperatures and the conversions are lower. ACF also catalyzes the hydroarylation of 1,3,5-trifluorobenzene and pentafluorobenzene with ethylene and propylene. The alkylations of arenes with non-fluorinated olefins resemble typical Friedel–Crafts chemistry to give rise to Markovnikov regioselectivity. The reaction of CF3CH=CH2 with benzene proceeds with anti-Markovnikov regioselectivity to give the fluorinated olefin PhCHCH=CF2 and the alkylation product PhCH2CH2CF3 as products of C?F and C?H activation.