Carboxylic acids
Intercalation and functionalization of brucite with carboxylic acids.
... INTERCALATION AND FUNCTIONALIZATION OF BRUCITE WITH CARBOXYLIC ACIDS. Brucite (Mg(OH) 2 ) is a structural model of several natural layered minerals as well as of synthetic layered double hydroxides (LDH). ...
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Origin and implication of carboxylic acids in the atmosphere.
... OF CARBOXYLIC ACIDS IN THE ...weight carboxylic acids and their possible emission sources, as well as the implication of them in the atmosphere is ...presented. Carboxylic acids ...
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Effectiveness of carboxylic acids from Pichia membranifaciens against coffee rust
... Coffee rust is a fungal disease that has affected every coffee-producing region in the world. Given that the effectivity of the protectant and systemic fungicides applied routinely to control the spread of the causative ...
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Measurement and PC-SAFT modeling of solid-liquid equilibrium of deep eutectic solvents of quaternary ammonium chlorides and carboxylic acids
... the carboxylic acid that acts as H- bonding donor and the quaternary ammonium salt that acts as H- bonding ...the carboxylic acids are larger than one at very high concentration of carboxylic ...
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Friedel–Crafts acylation of arenes with carboxylic acids using polystyrene-supported aluminum triflate
... protic acids or Lewis acids. Acylation of arenes using carboxylic acids is preferable to the acylation via acid chlorides or anhydrides because the former reaction produces only water as a ...
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Carboxylic acids measuremsnts in urban air of são paulo city: an analytical and environmental approach.
... Na figura 1 estão ilustrados os dois sistemas coletores em- pregados: A- conjunto de dois filtros, 47 mm cada, dispostos em série, sendo o filtro superior, quartzo recoberto com Teflon, [r] ...
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Supramolecular architectures in crystals of melamine and aromatic carboxylic acids
... High efficiency of SHG is observed in the crystals of double proton- ated melaminium bis(trichloroacetate) dihydrate (about 3-times greater than that of KDP) [20]. Another non centrosymmetric crys- tal of melaminium ...
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J. Braz. Chem. Soc. vol.14 número1
... of carboxylic acid formation can be considered a true indicator of the reaction of the aldehyde at the electrode ...to carboxylic acids are affected by the number of carbons in the aliphatic chain, ...
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J. Braz. Chem. Soc. vol.26 número2
... small carboxylic acids, like acetic acid, on the acidity of the light bio-oil and tetradecanoic and hexadecanoic acids on that of the heavy ...
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Cloud chemistry at the Puy de Dôme: variability and relationships with environmental factors
... than carboxylic acids to act as ...mono-carboxylic acids to the solute content of cloud water relative to their contribution to the aerosol ...
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Organic matter composition in the sediment of three Brazilian coastal lagoons – District of Macaé, Rio de Janeiro (Brazil)
... fatty acids compared to ...from carboxylic acid distribution is in part substantiated by in situ measurements of oxygen sat- uration (Petrucio ...boxylic acids may be the preferred deposition of ...
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J. Braz. Chem. Soc. vol.23 número7
... organic acids, resulting in polyesters, and can be used in the composition of urea/formaldehyde or phenol/ formaldehyde resins to improve the qualities of adhesion and moisture resistance of ...from ...
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J. Braz. Chem. Soc. vol.25 número2
... aromatic carboxylic acids bearing electron-donating substituents, with benzyl alcohol was completed in longer reaction time (55-70 min) than the above-mentioned acids ...
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J. Braz. Chem. Soc. vol.18 número6
... aromatic carboxylic acids with isocyanates, first the reaction of phenyl isocyanates with benzoic acid was performed in different conventional organic solvents such as toluene, N,N-dimethylformamide (DMF) ...
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J. Braz. Chem. Soc. vol.18 número5
... In a typical procedure, a mixture of propionic anhydride (2 mmol) and polyphosphoric acid (2 g) was subjected to microwave irradiation (for 2 minutes) to afford the desired γ-pyrone (72% yield). The obvious merit of this ...
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On line pre-concentration for simultaneous determination of low molecular weight organic acids and inorganic anions in Amazonian river water samples employing ion chromatography with conductivity detection
... chain carboxylic acids which can partly be dissociated to anionic forms in aqueous solution can also be separated by suppressed ion chromatography (IC) with conductivity ...organic acids (Ding et ...
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J. Braz. Chem. Soc. vol.25 número3
... The increase in current density and substrate content led to an almost total mineralization. In contrast, the PEF process was more powerful giving almost complete mineralization in less electrolysis time under comparable ...
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J. Braz. Chem. Soc. vol.23 número7
... The catalytic performance of BBn, VLn, BBa and VLa was investigated in the esterification of several carboxylic acids with different alcohols. The purpose was to evaluate the versatility of the ...
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J. Braz. Chem. Soc. vol.18 número2
... p-Nitrobenzoic acid was found to be the versatile Bronsted organic acid promoter among the carboxylic acids tested for the preparation of 1,5-benzodiazepine derivatives from a wide range of substituted ...
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J. Braz. Chem. Soc. vol.20 número7
... In summary, we have developed an alternate new method to synthesize 1,2,4-oxadiazoles from carboxylic acids and arylamidoximes using ethyl chloroformate as a coupling agent. The desired 3,5-disubstituted ...
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