نتایج جستجو برای: substituted pyridines
تعداد نتایج: 45278 فیلتر نتایج به سال:
A series of substituted pyridine dialcohols (2,6-bis(hydroxyalkyl)pyridines), 1-4, was used for the synthesis of various types of aluminum complexes. Aluminum methyl derivatives, 2-4a, were obtained by the reaction of AlMe3 with the corresponding ligand or transmetallation reactions of germylenes. Aluminum chloride complexes, 3-4b, were obtained by substitution of the Me group under the action ...
The synthesis of a pair of electron-deficient porphyrin building blocks and their resulting coordinatively linked supramolecular assemblies are described. The perfluorophenyl substituted porphyrins feature pendant pyridines which, upon reaction with Re(CO)5Cl assemble into discrete dimers and tetramers, as dictated by the geometry of the porphyrin monomer. The resulting supramolecular complexes...
A number of sets of nitrogenous bases (substituted pyrimidines, pyrazines and pyridines) are studied using the B3LYP/6-31G* strategy (with counterpoise correction) for their ability to associate among themselves and form stable well-defined hydrogen-bonded base pairs. This is to determine their suitability to furnish base pairs which may serve as potential repeat units for H-bonded macromolecul...
A palladium-catalyzed aerobic and ligand-free Suzuki reaction in aqueous ethanol has been developed for the synthesis of N-heteroaryl substituted 9-arylcarbazolyl derivatives. A number of N-heteroaryl halides, namely 2-halogenated pyridines, 2-bromoquinoline, 5-bromopyrimidine and 2-chloropyrazine, were coupled with 4-(9H-carbazol-9-yl)phenylboronic acid (CPBA) or 9-phenyl-9H-carbazol-3-ylboron...
Electronic Effects in 4-Substituted Bis(imino)pyridines and the Corresponding Reduced Iron Compounds
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