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Published February 1, 1974 | public
Journal Article

Carbon-13 Magnetic Resonance Studies of Azoles. Tautomerism, Shift Reagent Effects, and Solvent Effects

Abstract

The effects of substitution, lanthanide-shift reagents, solvent changes, and tautomerism were investigated on the ^(13)C chemical shifts of pyrrole, pyrazole, imidazole, s- and v-triazole, and tetrazole. It was concluded that ^(13)C chemical shifts are of limited value to ascertain the positions of tautomeric equilibrium for rapidly interconverting azole tautomers.

Additional Information

© 1974 American Chemical Society. Received August 24, 1973. This work is the 11th publication in the series "Nmr Studies of Heterocyclic Compounds." For previous papers in this series, see ref 50. The part of this research done at the California Institute of Technology was supported by the National Science Foundation. Université des Sciences et Techniques du Languedoc. California Institute of Technology.

Additional details

Created:
August 19, 2023
Modified:
October 24, 2023