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    БкСлСтная изомСризация Π³Π΅ΠΏΡ‚Π°Π½ΠΎΠ² Π² присутствии супСркислотных ΠΊΠ°Ρ‚Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€ΠΎΠ² Ρ€Π°Π·Π»ΠΈΡ‡Π½ΠΎΠΉ ΠΏΡ€ΠΈΡ€ΠΎΠ΄Ρ‹

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    The sequence of the formation of multi-branched heptane isomers was studied in liquid and gaseous phases over different liquid and solid superacid catalysts. It was found that this sequence does not depend on the phase state, catalyst nature, and conditions, evidencing in favor of common reaction mechanism. The 2,4-dimethylpentane transformation into 2,2-dimethylpentane can be explained by the intermediate formation of cyclobutyl carbocation.Π­ΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎ ΠΈΠ·ΡƒΡ‡Π΅Π½Π° ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ образования Ρ€Π°Π·Π²Π΅Ρ‚Π²Π»Π΅Π½Π½Ρ‹Ρ… ΠΈΠ·ΠΎΠΌΠ΅Ρ€ΠΎΠ² ΠΏΡ€ΠΈ ΠΏΡ€Π΅Π²Ρ€Π°Ρ‰Π΅Π½ΠΈΠΈ Π½-Π³Π΅ΠΏΡ‚Π°Π½Π° Π² ΠΆΠΈΠ΄ΠΊΠΎΠΉ ΠΈ Π³Π°Π·ΠΎΠ²ΠΎΠΉ Ρ„Π°Π·Π°Ρ… ΠΏΠΎΠ΄ дСйствиСм Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… ΠΆΠΈΠ΄ΠΊΠΈΡ… ΠΈ Ρ‚Π²Π΅Ρ€Π΄ΠΎΠ³ΠΎ супСркислотных ΠΊΠ°Ρ‚Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€ΠΎΠ². НайдСно, Ρ‡Ρ‚ΠΎ эта ΠΏΠΎΡΠ»Π΅Π΄ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΡŒ Π½Π΅ зависит ΠΎΡ‚ Ρ„Π°Π·ΠΎΠ²ΠΎΠ³ΠΎ состояния, ΠΏΡ€ΠΈΡ€ΠΎΠ΄Ρ‹ ΠΊΠ°Ρ‚Π°Π»ΠΈΠ·Π°Ρ‚ΠΎΡ€ΠΎΠ² ΠΈ условий, Ρ‡Ρ‚ΠΎ ΡΠ²ΠΈΠ΄Π΅Ρ‚Π΅Π»ΡŒΡΡ‚Π²ΡƒΠ΅Ρ‚ ΠΎΠ± ΠΎΠ±Ρ‰Π΅ΠΌ ΠΌΠ΅Ρ…Π°Π½ΠΈΠ·ΠΌΠ΅ Ρ€Π΅Π°ΠΊΡ†ΠΈΠΈ. ΠŸΡ€Π΅Π²Ρ€Π°Ρ‰Π΅Π½ΠΈΠ΅ 2,4-Π΄ΠΈΠΌΠ΅Ρ‚ΠΈΠ»ΠΏΠ΅Π½Ρ‚Π°Π½Π° Π² 2,2-Π΄ΠΈΠΌΠ΅Ρ‚ΠΈΠ»ΠΏΠ΅Π½Ρ‚Π°Π½ ΠΌΠΎΠΆΠ½ΠΎ ΠΎΠ±ΡŠΡΡΠ½ΠΈΡ‚ΡŒ ΠΏΡ€ΠΎΠΌΠ΅ΠΆΡƒΡ‚ΠΎΡ‡Π½Ρ‹ΠΌ ΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠ΅ΠΌ Ρ†ΠΈΠΊΠ»ΠΎΠ±ΡƒΡ‚ΠΈΠ»ΡŒΠ½ΠΎΠ³ΠΎ ΠΊΠ°Ρ€Π±ΠΊΠ°Ρ‚ΠΈΠΎΠ½Π°

    Skeletal isomerization of heptanes over superacid catalysts of different nature

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    The sequence of the formation of multi-branched heptane isomers was studied in liquid and gaseous phases over different liquid and solid superacid catalysts. It was found that this sequence does not depend on the phase state, catalyst nature, and conditions, evidencing in favor of common reaction mechanism. The 2,4-dimethylpentane transformation into 2,2-dimethylpentane can be explained by the intermediate formation of cyclobutyl carbocation
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