A5024001581- Oxidative Organic Chemistry Reactions
- Chemical Synthesis and Reactions
- Chemical Reactions and Mechanisms
- Asymmetric Synthesis and Catalysis
- Chemical Synthesis and Analysis
- Organic Chemistry Cycloaddition Reactions
- Insect and Pesticide Research
- Synthesis and Biological Evaluation
- Insect Pest Control Strategies
- Synthetic Organic Chemistry Methods
- Crystallization and Solubility Studies
- Plant and animal studies
- Polyoxometalates: Synthesis and Applications
- Water Quality Monitoring and Analysis
- Synthesis and Catalytic Reactions
- Insect and Arachnid Ecology and Behavior
- Radical Photochemical Reactions
- X-ray Diffraction in Crystallography
- Fungal Plant Pathogen Control
N.D. Zelinsky Institute of Organic Chemistry
2019-2025
D. Mendeleyev University of Chemical Technology of Russia
2019-2020
The catalyst H3+x PMo12-x+6 Mox+5 O40 supported on SiO2 was developed for peroxidation of 1,3- and 1,5-diketones with hydrogen peroxide the formation bridged 1,2,4,5-tetraoxanes 1,2,4-trioxolanes (ozonides) high yield based isolated products (up to 86 90 %, respectively) under heterogeneous conditions. Synthesis peroxides conditions is a rare process represents challenge this field chemistry, because tend decompose surface . A new class antifungal agents crop protection, that is, cyclic...
Four heteroatoms dance in the cascade of four pericyclic reactions initiated by ozonolysis C═N bonds. Switching from imines to semicarbazones introduces fifth heteroatom that slows this dance, delays reaching thermodynamically favorable escape path, and allows efficient interception carbonyl oxides (Criegee intermediates, CIs) an external nucleophile. The new three-component reaction alcohols, ozone, oximes/semicarbazones greatly facilitates synthetic access monoperoxyacetals (alkoxyhydroperoxides).
In recent years, the number of pollinators in world has significantly decreased. A possible reason for this is toxic effects agrochemicals reducing immunity insects that leads to their increased susceptibility pathogens. Ascosphaera apis a dangerous entomopathogenic fungus, afflicting both honeybees and bumblebees. We investigated fungicide activity cyclic synthetic peroxides against A. isolated from Bombus terrestris L. The exhibited high mycelium growth inhibition up 94–100% at...
Ozonolysis of cycloalkanone semicarbazones in alcohol containing solution with the subsequent addition nickel (II) dithiocarbamates or xanthates was found to result ω‐xanthyl ω‐dithiocarbamyl carboxylic acid esters. The reaction proceeds several steps. initial one is semicarbazone ozonolysis presence alcohol, which leads alicyclic alkoxyhydroperoxide. second step an extraordinary interaction between alkoxyhydroperoxide and dithiocarbamate xanthate, via alkoxy radical formation its...
This work discloses a two-step, one-pot approach to ω-functionalized esters via cleavage of the alicyclic fragment cycloalkanone semicarbazones. is based on combination synthesis various alkoxyhydroperoxides semicarbazone ozonolysis and
Alkene ozonolysis is mostly known as a textbook reaction, resulting in carbonyl compounds. The combination of ozone and hydroperoxide was found to lead the construction more oxygen-rich compounds, unsymmetrical geminal bisperoxides, avoiding well further oxidation with ozone, hydroperoxide, oxygen peroxide rearrangements. discovered three-component synthesis provided alkylperoxy hydroperoxides 41–63% yield from alkenes.
The search for new classes of fungicides has long been important in plant protection due to the development fungal resistance currently used agrochemicals. Organic peroxides have regarded as exotic and unstable compounds. discovery antimalarial activity peroxide natural product Artemisinin, an achievement that was recently recognized with Nobel Prize, brought organic into medicinal agrochemistry. In this paper, fungicidal synthesized peroxides—geminal bishydroperoxide, bridged...
A three‐component reaction of 1,3‐diketones with H<sub>2</sub>O<sub>2</sub> and alcohols was discovered. 3,5‐Dialkoxy‐1,2‐dioxolanes are formed in yield ranging from 13% to 83% using an excess acids such as H<sub>2</sub>SO<sub>4</sub>, MeHSO<sub>3</sub>, <i>p</i>‐TsOH·H<sub>2</sub>O or BF<sub>3</sub>·Et<sub>2</sub>O. This proceeds the formation 3,5‐dialkoxy‐1,2‐dioxolanes despite...
A catalyst for the synthesis of ozonides and tetraoxanes under heterogeneous conditions was developed. This work reports an unprecedented class fungicides with significant potential agricultural applications. More information can be found in Full Paper by A. O. Terent'ev et al. on page 4734.