Carbon-13 NMR spectroscopy of heterocyclic compounds: Part VIII. A 20-MHz study of chemical shifts and carbon—proton coupling constants for some methyl- and phenylchromones, chroman-4-one and chroman-4-ol
摘要：
Assignments of carbon chemical shifts and some carbon—proton coupling constants are presented for chromone, the 2-, 3- and 7-methylchromones, the 2- and 3-phenylchromones (flavone and isoflavone), chroman-4-one and chroman-4-ol. The use of both shift and coupling perturbations in determining positions of substitution is discussed.
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DOI：
10.1016/0022-2860(79)80140-4
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年份：
1979
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2010
被引量：22
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