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Showing 1 to 2 of 2 for “"PMR spectroscopy"”.
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The synthesis and reactivity of 7-azaindolizines.
… have been confirmed spectroscopically (mainly by pmr spectroscopy) and elemental analysis. Examination of the pmr spectra of 7-azaindolizines in trifluoroacetic acid showed solely protonation at the non-bridgehead nitrogen. Similarly quaternisation was found to occur at the non-bridgehead …
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Spectroscopic studies of some heterocyclic hydrazones and their metal complexes
The PMR spectra of the two isomers of pyridine-2-aldehyde=2'-pyridyl hydrazone in carbon tetrachloride, dimethyl sulphoxide, and benzene solutions have been studied. Specific associations between PAPHY molecules and solvent molecules have been proposed to account for the observed solvent shifts. …