Russian Chemical Bulletin

, Volume 44, Issue 11, pp 1989–1997 | Cite as

Some problems in PTC theory: solvation, crystalline lattice strength, and topology

  • S. S. Yufit


It was shown thatSN2-type reactions both in solid-liquid and liquid-liquid systems can proceed at the interface through the formation of cyclic adsorption complexes. The conditions for the formation of the latter were formulated, and the kinetic and thermodynamic parameters of reaction with solid ionophoric salts were estimated. A linear relation between the energy of the crystalline lattice of the salt and its melting point was estimated, the latter being shown to be useful as a simplified estimation of the reactivity of solid salts in reactions where the crystalline lattice is destroyed. In solid-liquid systems the “benzene” effect of solvents was discussed. In highly basic nitrogen-containing solvents (pyridine,etc.), a substitution reaction proceeds in the absence of a PT catalyst. The role of hydration in liquid-liquid systems was discussed.

Key words

phase transfer catalysis (PTC) reaction mechanism liquid-liquid and solid-liquid systems role of solvents in PTC “benzene” solvent effect cyclic complexes at interface. 


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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • S. S. Yufit
    • 1
  1. 1.N. D. Zelinsky Institute of Organic ChemistryRussian Academy of SciencesMoscowRussian Federation

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