Material8 The pyridinealdoxime methiodides were obtained by boiling the oximes with methyl iodide in ethanol (Green & Saville, 1956). Quinoline-4-aldoxime methiodide, m.p. 232-233° (Found: I 40x2. C11H11N20I requires 1 40.4%) and pyridine-2-alidoxime ethiodide, m.p. 186-188° (Found: I 45-3. C8H11N20I requires I 45-6%) were prepared similarly. Reactivation experiments These were carried out on h...

Following our previous studies on potassium poly(heptazine imide) (K-PHI), that is, catalyzed photooxidative [3+2] aldoxime-to-nitrile addition to form 1,2,4-oxadiazoles, we discovered electron-rich oximes yield the parent aldehydes instead of target products. In this work, mechanism singlet oxygen-mediated deoximation process was established using a series control reactions and spectroscopic m...

MgO nanopartticels (NP-MgO) in average size between 30—130 nm were prepared by sonochemistry method. Some phenols have been converted to ortho-hydroxybezaldehyd by ortho-formylation using MgO nanoparticles and (CH2O)n in xylene and subsequently treated with aqueous NH2OH.HCl, affording the corresponding aldoxime in a one-pot procedure. Moreover, this one-pot process, with two transformations, o...

Silicon and germanium containing pyridine aldoxime, ketoxime and amidoxime O-ethers have been prepared using phase transfer catalytic systems oxime alkyl halide solid KOH 18-crown-6 benzene and oxime alkyl halide solid K(2)CO(3) or Cs(2)CO(3) 18-crown-6 toluene. Cytotoxic activity of silicon and germanium containing pyridine oxime O-ethers was tested in vitro on two monolayer tumor cell lines: ...

While belonging to the most fundamental functional groups, nitriles represent a class of compound that still raises challenges in terms an efficient, cost-effective, general and, at same time, sustainable way for their synthesis. Complementing existing chemical routes, recently cyanide-free enzymatic process technology based on use aldoxime dehydratase (Oxd) as biocatalyst component has been de...

The water sensing properties of two efficient two-component fluorescent "turn-on" chemo-sensors based on the 7-dialkylaminocoumarin oxime acid-base equilibrium were investigated. Interestingly, although simple frontier orbital analysis predicts an intramolecular photoinduced electron transfer quenching pathway in conjugated oximates, TD-DFT (Time-dependent density functional theory) quantum che...