Furopyridines. XI. 13C NMR Spectra of 2- or 3-Substituted Furo[2,3-b]-, Furo[3,2-b]-, Furo[2,3-c]- and Furo[3,2-c]pyridine |
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Authors: | Shunsaku Shiotani Hiroyuki Morita |
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Abstract: | The 13C nmr spectra of 2- or 3-monosubstituted furo2,3-b]- 1a-1j , furo3,2-b]- 2a-2j , furo2,3-c]- 3a-3j and furo3,2-c]pyridine derivatives 4a-4j are reported. Effects by change in annelation and substituent effects on 13C chemical shifts and carbon-proton coupling constants are discussed. The spectra of benzob]furan derivatives 5a-5j having the corresponding substituent are also reported for comparison. |
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