0000000001311726

AUTHOR

I. Goba

Synthesis, spectroscopic and conformational analysis of 1,4-dihydroisonicotinic acid derivatives

Abstract Structural and conformational properties of 1,4-dihydroisonicotinic acid derivatives, characterized by ester, ketone or cyano functions at positions 3 and 5 in solid and liquid states have been investigated by X-ray analysis and nuclear magnetic resonance and supported by quantum chemical calculations. The dihydropyridine ring in each of the compounds exists in flattened boat-type conformation. The observed ring distortions around the C(4) and N(1) atoms are interrelated. The substituent at N(1) has great influence on nitrogen atom pyramidality. The 1H, 13C and 15N NMR chemical shifts and coupling constants are discussed in terms of their relationship to structural features such as…

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CCDC 886199: Experimental Crystal Structure Determination

Related Article: I.Goba,B.Turovska,S.Belyakov,E.Liepinsh|2013|Khim.Get.Soedin.,SSSR||778|

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CCDC 676989: Experimental Crystal Structure Determination

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CCDC 886197: Experimental Crystal Structure Determination

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CCDC 886816: Experimental Crystal Structure Determination

Related Article: I.Goba,B.Turovska,S.Belyakov,E.Liepinsh|2013|Khim.Get.Soedin.,SSSR||778|

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CCDC 676991: Experimental Crystal Structure Determination

Related Article: I.Goba, B.Turovska, J.Stradins, I.Turovskis, E.Liepinsh, S.Belyakov|2007|Khim.Get.Soedin.,SSSR||226|

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CCDC 676992: Experimental Crystal Structure Determination

Related Article: I.Goba, B.Turovska, J.Stradins, I.Turovskis, E.Liepinsh, S.Belyakov|2007|Khim.Get.Soedin.,SSSR||226|

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