Synthesis of a Tight Intramolecular OH···Olefin Interaction, Probed by IR, (1)H NMR, and Quantum Chemistry

J Org Chem. 2015 May 1;80(9):4803-7. doi: 10.1021/acs.joc.5b00470. Epub 2015 Apr 14.

Abstract

We have synthesized a molecule containing a tight hydrogen-bonding interaction between an alcohol and a nonconjugated π-system. The strength of this hydrogen bond results in a large red shift, nearly 189 cm(-1), on the alcohol stretching frequency in the IR spectrum in comparison to a free alcohol control. The interaction is notable in that it possesses a better defined intramolecular hydrogen bond compared to the usual molecules for which it is noted, such as syn-7-norbornenol. This interaction was studied through the use of IR and NMR spectroscopy, X-ray crystallography, and molecular modeling calculations.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Alkenes / chemistry*
  • Crystallography, X-Ray
  • Hydroxides / chemistry*
  • Magnetic Resonance Spectroscopy
  • Models, Molecular
  • Molecular Structure
  • Protons
  • Quantum Theory*
  • Spectrophotometry, Infrared

Substances

  • Alkenes
  • Hydroxides
  • Protons
  • hydroxide ion