A New Preparation Method for the Alkylation Catalysts of Aromatic Compounds Based on Immobilized AlCl3
作者:V. I. Bykov、B. A. Belyaev
DOI:10.1134/s0023158421020026
日期:2021.3
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 with a high reaction rate at room temperature. Thus, the conversion of 1-hexene in the alkylation of benzene or toluene was close to 100% already 5 min
New Heterogeneous Alkylation Catalysts Based on Niobium Pentachloride
作者:V. I. Bykov、B. A. Belyaev、T. A. Butenko
DOI:10.1134/s0023158418050026
日期:2018.9
New active catalysts based on niobiumpentachloride 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.
Reduction of disubstituted acetylenes under conditions of organotantalum and organoniobium synthesis
作者:A. M. Gabdullin、R. N. Kadikova、I. R. Ramazanov
DOI:10.1007/s11172-023-3885-z
日期:2023.5
Reactions of dialkyl-substituted acetylenes with 4 equiv. of TaCl5 or NbCl5 in toluene in the presence of stoichiometric amounts of magnesium metal regioselectively gave p-tolyl-disubstituted alkanes. Dec-5-yne reacted with the TaCl5—M system (M = Zn, Fe, Sm, Al, Mn) in toluene to selectively afford 1-(dec-5-yl)-4-methylbenzene in 79–90% yields. Effects of the aromatic solvents on the selectivity of