High-performance ring-opening catalysts based on iridium-containing zeolite Beta in the hydroconversion of decalin
Decalin was converted in a flow-type reactor under a hydrogen pressure of 5.2 MPa on Ir/H,A-Beta zeolite catalysts, where A stands for an alkali metal cation. In one series of catalysts, the Ir content was 3 wt.%, and the nature of A was varied from lithi
IONIC ALKYLATION OF TERTIARY ALKYL HALIDES WITH TETRAALKYLSILANES
In the reaction of tertiary alkyl halides with tetraethyl-, tetrapropyl-, tetrabutyl-, and tetraamylsilane in the presence of AlX3 the halogen atom is substituted by the alkyl group with the formation of the corresponding saturated hydrocarbons containing a quaternary carbon atom.As a result of the hydride mobility of the β-hydrogen atom in the tetraalkylsilane ionic hydrogenolysis of the substrate occurs in addition to alkylation, and the degree of hydrogenolysis depends on the alkyl substituent in the silane.
Bolestova, G. I.,Parnes, Z. N.
p. 32 - 36
(2007/10/02)
IONIC HYDROMETHYLATION OF OLEFINS BY THE (CH3)4Si-HCl-AlCl3 SYSTEM
The ionic hydromethylation of olefins with the (CH3)4Si-HCl-AlCl3 system was realized for the first time.A method was developed on the basis of this system for the production of high yields of difficultly obtainable saturated hydrocarbons with a quaternary carbon atom (including bicyclic compounds with an angular methyl group) from acyclic, monocyclic, and bicyclic olefins.
Bolestova, G. I.,Parnes, Z. N.,Kursanov, D. N.
p. 2175 - 2179
(2007/10/02)
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