Carbon-13 NMR spectroscopy of heterocyclic compounds—II : A 20 MHz study of chemical shifts and carbon-proton coupling constants for coumarin and some bromocoumarins
作者： N.J. Cussans , T.N. Huckerby
DOI: 10.1016/0040-4020(75)80274-2
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摘要: Abstract Complete assignments of chemical shifts and extensive carbon-proton coupling constants are presented for coumarin through a study also involving detailed measurements on 3-bromo-, 6-bromo-, 7-bromo-, 3,6-dibromo- 3,6,8-tribromo-coumarin.
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