Carboxylic acids are traditionally produced from fossil fuels and have significant applications in the chemical, pharmaceutical, food, and fuel industries. Significant progress has been made in replacing such fossil fuel sources used for production of carboxylic acids with sustainable and renewable biomass resources. However, the merits and demerits of each carboxylic acid processing platform a...

One pot synthesis of 1-arylpyrazolo[3,4-d]pyrimidin-4-ones by the reaction of 5-amino-N-substituted-1H-pyrazole-4-carbonitrile with different lower aliphatic acids in the presence of POCl(3) has been developed. The structures of all the title compounds have been confirmed by IR, (1)H-NMR, (13)CNMR, and elemental analyses. Moreover, the structures of one of these compounds, 2c, was confirmed by ...

This study aimed to synthesize quinolinone derivatives and investigate their cytotoxic activity. The compound 1-azacoumarin-3-carboxylic acid (2-oxo-1H-quinoline-3-carboxylic acid) was obtained via the cyclocondensation of 2-hydroxybenzaldehyde with diethyl malonate in base catalyst give ethyl coumarin-3-carboxylate, followed by ammonolysis ester (ethyl coumarin-3-carboxylate) ammonia presence ...

Usually in order to obtain out-of-plane sub­stituted phthalocyanine complexes of zirconium and hafnium (PcML2), the reaction substitution chlorine atoms dichloridophthalocyaninates PcMCl2 is used. How­ever, this method has some limitations because during reaction, hydrogen chloride released, which can initiate hydrolysis starting compounds sensitive an acidic environment, particular, β-ketoeste...

The main obstacle to the widespread use of hydrothermal liquefaction (HTL) for waste and wet biomass recycling is formation a significant amount highly polluted wastewaters. This paper presents an analysis chemical composition toxicity aqueous phase from HTL (HTL-AP) primary secondary sludge. It was shown that HTL-AP has high level organic pollution (total carbon (TOC) = 4.2–9.6 g/dm3, oxygen d...

The composition of volatile components cordierite from the Muzkol metamorphic complex was studied using shock destruction with pyrolysis-free gas chromatography-mass spectrometry (GC-MS) simultaneous IR and Raman spectroscopy. Applying GC-MS procedure, component relative concentrations (rel.%) different zones crystals were determined. It found that substantially magnesian formed a predominantly...

Short-chain fatty acids (SCFAs) have been used as raw materials in wide range of chemical and medical applications. One technique to produce SCFAs is oxidative cleavage long-chain (LCFAs). However, unless the LCFAs are unsaturated, yield often very low because carboxylic group acid more active than other part molecule. This work explores idea introducing a double bond into saturated LCFA, i.e.,...

Monoselective γ-C-H olefination and carbonylation of aliphatic acids has been accomplished by using a combination of a quinoline-based ligand and a weakly coordinating amide directing group. The reaction provides a new route for constructing richly functionalized all-carbon quaternary carbon centers at the β-position of aliphatic acids.

Using a scalar relativistic all-electron density functional method, we studied uranium(VI) complexation with benzoic acid and its derivatives in aqueous solution as models of uranyl humates. We explored monodentate, bidentate, and chelate coordination of various isomers of methyl and hydroxyl substituted benzoic acid ligands. Monodentate complexes were determined to be energetically preferred a...