15N NMR of 1,4‐dihydropyridine derivatives |
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| Authors: | Inguna Goba Edvards Liepinsh |
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| Affiliation: | Physical Organic Chemistry, Latvian Institute of Organic Synthesis, , Riga, Latvia |
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| Abstract: | In this article, we describe the characteristic 15N and 1HN NMR chemical shifts and 1J(15N–1H) coupling constants of various symmetrically and unsymmetrically substituted 1,4‐dihydropyridine derivatives. The NMR chemical shifts and coupling constants are discussed in terms of their relationship to structural features such as character and position of the substituent in heterocycle, N‐alkyl substitution, nitrogen lone pair delocalization within the conjugated system, and steric effects. Copyright © 2013 John Wiley & Sons, Ltd. |
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| Keywords: | NMR 15N NMR chemical shifts 1HN NMR chemical shifts 1J(15N– 1H) coupling constants substituent effect solvent effect quantum chemical calculations 1,4‐DHP |
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