The crystal structure of N-phenacyl-4-cyanopyridinium bromide, C6H5–CO–CH2–N+C5H4–CN·Br−, was determined by X-ray diffraction as monoclinic, space group C2/c with a=20.910(4), b=12.849(3), and c=9.934(2) Å, β=90.79(3)°. The dihedral angle between the planes of the phenyl and pyridine ring...

The cathodic reduction of phenacyl bromide yield different products when the electrolysis is carried out in dimethylformamide or methanol. The formation of products is rationalized.

Cathodic reduction of phenacyl bromides N-acyl hydrazones lead to dimeric 1,4-diaryl-1,4-butanedione di-N-acylhydrazones, which give the corresponding 1-N-acylamino-2,5-diarylpyrroles in good yields.

Phenacyl bromides undergo smooth vic-diallylation and dipropargylation with allyl and propargyl indium reagents generated in situ from metallic indium and allyl or propargyl bromide to produce 4-arylocta-1,7-dien-4-ol derivatives in good yields. Phenacyl chloride and azide also participated effe...

A method is described for carrying out indium-mediated allylation reactions of phenacyl bromides in aqueous solution that form homoallylic bromohydrins. By employing subsequent base treatment, the homoallylic bromohydrins were converted to allylic epoxides. Finally, the process has been used as ...

A simple, efficient and eco-friendly method has been developed for quinoxaline synthesis from inexpensive and readily available diamines and phenacyl bromides by catalyst- and additive-free protocol.

Results of investigation of H-acid degradation in photoelectrochemical process with the application of TiO2–RuO2/Ti electrodes modified with transition metals oxides like: Nb2O5, ZrO2 and Y2O3, are described. Comparison of H-acid conversion calculated as a change in COD and TOC in photocatalyti...

Present study proposed the preparation, characterization and application of cobalt (Co), neodymium (Nd), and cerium (Ce) modified lead (PbO2) electrodes. Morphological and structural properties of as-prepared electrodes were determined by SEM, XRD, and XPS. Linear sweep voltammetry (LSV) and acc...

The recalcitrant H-acid (1-amino-8-naphthol-3,6-disulfonic acid) in aqueous solution was oxidized by Fenton process, focusing on the relation of Fenton's reagent doses and degradation products. The experimental results showed that COD and TOC removals and biodegradability (BOD/COD ratio) of...

As one of the reactive oxygen species, hypochlorous acid (HOCl) may be associated with various diseases. To understand the roles of HOCl in living organism, fluorescent probes for imaging HOCl in living systems have been developed fast in recent years owing to their high selectivity, excellent s...

A microwave (MW)-assisted-H2O2 technique used to revise 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid (H-acid)-saturated biochars (BCs) was investigated in detail. This method could simultaneously degrade the H-acid adsorbed in the BCs-based BiFeO3 (BFO) nanocomposites (BFO/BCs), in which BFO...

The interplay of salicylic acid (SA) and reactive oxygen species (ROS) can modulate biotic and abiotic stress of plants, essential biological aerobic oxidation processes. Meanwhile, ROS plays a critical role in TiO2 photocatalytic system for the degradation of organic species. Herein, we develop...

Inclusion of 3-hydroxynaphthalene-2-carboxylic acid in grid-like structure of a coordination-polymer 1 formed from 1,3-bis(4-pyridyl)propane (LL) with cadmium(II) chloride is described. Components of the grid are comprised of cyclic secondary building blocks of 4 + 4 condensation of LLs and cadm...

Streptomyces spp. producing geosmin have been regarded as the most frequent and serious microbial contamination causing earthy off-flavor in Chinese liquor. It is therefore necessary to control the Streptomyces community during liquor fermentation. Biological control, using the native microbiota...

Geosmin (GSM) and 2-methylisoborneol (2-MIB) are the most common naturally occurring taste and odor compounds in water supplies. Conventional approaches for water treatment exhibit some benefits. However, those protocols are generally ineffective for the elimination of the two compounds. In this...

We conducted chlorination, UV photolysis, and UV/chlorin reactions to investigate the intermediate formation and degradation mechanisms of geosmin and 2-methylisoborneol (2-MIB) in water. Chlorination hardly removed geosmin and 2-MIB, while the UV/chlorine reaction at 254 nm completely removed g...

Production of taste and odour (T/O) compounds, principally geosmin, by complex cyanobacterial blooms is a major water quality issue globally. Control of these cyanobacteria imposes a significant cost on water producing and dependent industries, and requires routine monitoring and management. Cla...

Regular monitoring of the microbiome in recirculated aquaculture systems will allow the farmer to link water quality parameters to subsequent fish performance and will function as a tool for early identification of microbial conditions that could lead to impaired fish health.Microbial communitie...

Earthy off-flavour, caused by geosmin, constitutes an economic problem in recirculating aquaculture systems (RAS). Cyanobacteria, Streptomyces and myxobacteria are thought to be the main geosmin-producing bacteria in aquatic systems. In this study, the phylogeny of the gene involved in the geosm...

The sesquiterpene geosmin, mainly originating from cyanobacteria, is considered one of the problematic odor compounds responsible for unpleasant-tasting and -smelling water episodes in freshwater supplies. The biochemistry and genetics of geosmin synthesis in cyanobacteria is well-elucidated and...