70546-26-8Relevant articles and documents
Synthesis and conformational study of novel pyrazine-based pseudopeptides bearing amidoxime, amidoxime ester and 1,2,4-oxadiazole units
Ovdiichuk, Olga V.,Hordiyenko, Olga V.,Arrault, Axelle
, p. 3427 - 3435 (2016)
An efficient synthesis of pyrazine-based amidoximes bearing amino acid residues is reported. Esterification of amidoximes with further microwave-assisted cyclization into α-amino acid-derived 1,2,4-oxadiazoles has been developed. Conformational analysis o
Nucleophically transformed N-heterocyclic nitriles trapped by cyanooxomolybdates(IV): Crystallographic and spectroscopic study
Ryniewicz, Anna,Tomecka, Monika,Szklarzewicz, Janusz,Matoga, Dariusz,Nitek, Wojciech
, p. 229 - 237,9 (2020/07/31)
The reaction of K3Na[Mo(CN)4O2] ·6H2O with 2,3-dicyanopyrazine or 2-pyridinecarbonitrile in aqueous media results in isolation of two new compounds of formulae (PPh 4)2[Mo(CN)3O(pzac)]·2H2O (Hpzac = 3-carbamoyl-2-pyrazinecarboxylic acid) and (PPh4) 2[Mo(CN)3O(pynccn)]·3H2O·EtOH (Hpynccn = 2-pyridineiminocarbonitrile) respectively. X-ray single crystal structure measurements as well as physicochemical measurements confirm transformations of 2,3-dicyanopyrazine to 3-carbamoyl-2-pyrazinecarboxylic acid and 2-pyridinecarbonitrile to 2-pyridineiminocarbonitrile. All complexes are characterized by elemental analysis, IR and UV-Vis spectroscopy. Metal-assisted ligand transformations are studied spectrophotometrically in the pH range 8.5-11.5. Two different pathways of nitrile reactivity are shown and discussed.