Russian Journal of General Chemistry

, Volume 71, Issue 5, pp 752–755 | Cite as

Features of Acetal Interchange of 1,1-Dialkoxyalkanes with 1,2-Propylene Glycol in Neutral Solutions

  • A. L. Balashov
  • V. L. Krasnov
  • S. M. Danov
  • A. Yu. Chernov

Abstract

Reactions fo 1,1-dimethoxymethane, 1,1-dimethoxyethane, and 1,1-dimethoxypropane with 1,2-propylene glycol at 25°C in neutral solutions were studied by 13C NMR spectroscopy. Under these conditions, 1,1-dimethoxymethane does not react with the glycol. Only the primary OH group of the glycol participates in the acetal interchange. The reactions of 1,1-dimethoxyethane and 1,1-dimethoxypropane with the glycol, along with the linear acetals, yielded 2-alkyl-4-methyl-1,3-dioxolanes. The product ratio depends on the molar ratio 1,1-dialkoxyalkane : glycol. In the system 1,1-dimethoxypropane-1,2-propylene glycol, the equilibrium concentration of the cyclic acetal slightly increases with temperature in the range 25-80°C.

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Copyright information

© MAIK “Nauka/Interperiodica” 2001

Authors and Affiliations

  • A. L. Balashov
    • 1
  • V. L. Krasnov
    • 1
  • S. M. Danov
    • 1
  • A. Yu. Chernov
    • 1
  1. 1.Dzerzhinsk BranchNizhni Novgorod State Technical UniversityDzerzhinskRussia

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