Gas-phase basicity of cyclic guanidine derivatives - a DFT study (CROSBI ID 675297)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Briš, Anamarija ; Glasovac, Zoran ; Margetić, Davor
engleski
Gas-phase basicity of cyclic guanidine derivatives - a DFT study
Natural and synthetic guanidines are drawing a much interest due to their interesting physico- chemical properties.[1] Guanidines are commonly occurring functionality in nature, therefore, a lot of research has been done in bioorganic chemistry with the aim to discover and design pharmacologically active guanidine derivatives. [2] Also, the very high basicity (superbasicity) of neutral organic guanidine compounds is commonly employed in homogeneous catalysis.[1] There are already many different studies on basicity of different guanidine derivatives with the focus on finding new organic superbases and developing synthesis of those compounds.[3] Among various examples, 1, 5, 7-triazabicyclo[4.4.0]dec-5-ene (TBD) is well-known, commercially available cyclic superbase. Herein, we report our methodical study of the gas-phase basicity (GB) of various cyclic guanidine derivatives by Density Functional Theory (DFT) calculations using the B3LYP functional. Considered guanidines differ in the number of nitrogen atoms incorporated in heterocyclic rings as well as in the size of heterocyclic rings (Scheme 1). To locate the most stable structures of the neutral and protonated forms, a set of possible conformations were optimized. The most important structural parameters beneficially contributing to the stability of the structure are identified.
Gas-phase basicity ; cyclic guanidine ; DFT
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Podaci o prilogu
65-65.
2019.
objavljeno
Podaci o matičnoj publikaciji
Book of Abstratcts
Podaci o skupu
26. hrvatski skup kemičara i kemijskih inženjera (26HSKIKI) ; 4. simpozij Vladimir Prelog
poster
09.04.2019-12.04.2019
Šibenik, Hrvatska