Zakharchenko, Borys V. published the artcileNew palladium(II) complexes with 3-(2-pyridyl)-5-alkyl-1,2,4-triazole ligands as recyclable C-C coupling catalysts, Safety of Picolinonitrile, the main research area is palladium pyridylalkyltriazole complex preparation crystal mol structure; nitroaldol Henry reaction catalyst palladium pyridylalkyltriazole complex preparation; microwave assisted Suzuki Miyaura catalyst palladium pyridylalkyltriazole complex preparation.
A series of palladium(II) complexes with 3-(2-pyridyl)-5R-1,2,4-triazoles Pd(LR)2 (R = Et (4a), Pr (4b), i-Pr (4c) and t-Bu (4d)) have been synthesized and characterized by NMR, IR, UV-vis spectroscopy, ESI and MALDI-TOF mass spectrometry. Single-crystal x-ray diffraction study of 4a-d revealed a square-planar coordination geometry, in which the N^N chelating monoanionic ligands adopt a trans-configuration around Pd(II) and show notable intraligand C-H···N hydrogen bonding within the complex. The solid state emission and excitation spectra of 4a-d showed vibronic structure of the spectra at room temperature The TG/DTA curves of 4a-c revealed that the complexes are stable up to ca. 250°, whereas 4d starts to decompose at 230°. Compounds 4a-d efficiently catalyze the nitroaldol (Henry) reaction of benzaldehyde with nitroethane in water, methanol and ethanol with appreciable diastereoselectivity in favor of the syn-isomer (syn : anti up to 81 : 19). In addition, 4a-d catalyze the microwave-assisted Suzuki-Miyaura cross-coupling reaction of bromoanisole with Ph boronic acid, in the presence of a base. Moreover, these heterogeneous catalysts can be recovered and reused without losing activity for several consecutive cycles.
New Journal of Chemistry published new progress about Aldol condensation (nitroaldol). 100-70-9 belongs to class nitriles-buliding-blocks, name is Picolinonitrile, and the molecular formula is C6H4N2, Safety of Picolinonitrile.
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts