characterization of six new vanadyl complexes with acetylacetonate derivatives bearing asymmetricsubstitutions on the β-dicarbonyl moiety: the complexes were characterized in the solidstate as well as in solution. Our results show that all complexes are in square pyramidal geometry; cis isomers in the equatorial plane are favored in the presence of strongly coordinating solvents. EPR evidence suggests that all
Investigating the effect of ligand and cation on the properties of metal fluorinated acetylacetonate based magnetic ionic liquids
作者:Muhammad Qamar Farooq、Deepak Chand、Gabriel A. Odugbesi、Marcelino Varona、Yaroslav Mudryk、Jared L. Anderson
DOI:10.1039/c9nj02595b
日期:——
Magneticionicliquids (MILs) are a subclass of ionicliquids that possess a paramagnetic metal within their chemical structure, making them susceptible to external magnetic fields. A total of twenty-four (24) MILs were prepared and characterized to investigate the effect of the ligand, cation and anion on the physiochemical properties of acetylacetonate-based MILs. It was found that thermal stabilities
In this work, a novel copolymer PS–Eu–Tb–Zn, which can match a 365 nm UV chip, was synthesized by the RAFT polymerization of Tb(p-BBA)3UA, Eu(TTA)2(Phen)MAA, Zn(BTZ)UA and styrene.
An unconventional [1 + 1 + 1 + 1 + 1 + 1] annulation process was developed for the construction of β,β-dithioketones by merging C–C and C–S bond cleavage. In this reaction, rongalite concurrently served as triple C1 units, dual sulfur(II) synthons, and a reductant for the first time. Mechanism investigation indicated that the reaction involved the self-mediated valence state change of rongalite. By
Exploration of antimicrobial potential of pyrazolo[3,4-b]pyridine scaffold bearing benzenesulfonamide and trifluoromethyl moieties
作者:Navneet Chandak、Satish Kumar、Pawan Kumar、Chetan Sharma、Kamal R. Aneja、Pawan K. Sharma
DOI:10.1007/s00044-013-0544-1
日期:2013.11
The synthesis and biological evaluation of a library of thirty differently substituted pyrazolo[3,4-b]pyridines bearing benzenesulfonamide moiety at position-1 and trifluoromethyl group at position-4 are reported. Fused heterocyclic system present in the target compounds (5a-j, 6a-j, and 7a-j) was constructed by refluxing various 5-aminopyrazoles (3a-c) with differently substituted trifluoromethyl-beta-diketones (4a-j) in glacial acetic acid. All the target compounds (5-7) were evaluated for their in vitro antibacterial activity against four pathogenic bacterial strains namely, Staphylococcus aureus, Bacillus subtilis (Gram-positive), Escherichia coli, Pseudomonas aeruginosa (Gram-negative) and in vitro antifungal activity against two pathogenic fungal yeasts namely, Saccharomyces cerevisiae and Candida albicans.Thirty differently substituted pyrazolo[3,4-b]pyridines bearing benzenesulfonamide moiety at position-1 and trifluoromethyl group at position-4 were synthesized and screened for antibacterial and antifungal activities.