Topic
Nitrobenzene
About: Nitrobenzene is a research topic. Over the lifetime, 5285 publications have been published within this topic receiving 83368 citations. The topic is also known as: essence of mirbane & nitrobenzol.
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TL;DR: DFT calculations suggest formation of a superelectrophilic polyprotonated species that can transfer Cl + to the aromatic ring more efficiently than TICA due to charge-charge repulsion relief.
Abstract: +ao anel aromatico mais eficientemente do que o TICA devido ao alivio da repulsao carga-carga. Trichloroisocyanuric acid (TICA) in H 2 SO 4 is an efficient reagent for regioselective chlorination of isatin at the 5-position and deactivated aromatic compounds, such as nitrobenzene. DFT calculations suggest formation of a superelectrophilic polyprotonated species that can transfer Cl + to the aromatic ring more efficiently than TICA due to charge-charge repulsion relief.
30 citations
30 citations
TL;DR: A microscale nitrobenzene oxidation method using deuterium-labeled vanillin and syringaldehyde as internal standards is described, showing high-throughput determination of lignin components using a small amount of sample, i.e. 10 mg per reaction, and high reproducibility.
Abstract: The nitrobenzene oxidation method is widely used for structural analysis of lignin. However, the conventional nitrobenzene oxidation method has several drawbacks including the requirement of a sizeable amount of sample material and the rather slow completion of the reaction process. In this paper, we describe a microscale nitrobenzene oxidation method using deuterium-labeled vanillin and syringaldehyde as internal standards. Using this method, we show that the microscale nitrobenzene oxidation method realized high-throughput determination of lignin components using a small amount of sample, i.e. 10 mg per reaction, and high reproducibility. Due to the small sample sizes, the oxidation reaction and extraction steps of a number of samples can be completed in parallel, thus enabling us to process more than 40 samples per day.
30 citations
TL;DR: The solubility of toluene and benzaldehyde was measured in NaBr and (n-Pr)4NBr aqueous solutions at 25 °C, and benzoic acid and nitrobenzene were measured in the same systems at 10°C.
Abstract: The solubility of toluene and benzaldehyde was measured in NaBr and (n-Pr)4NBr aqueous solutions at 25 °C, and the solubility of benzoic acid and nitrobenzene was measured in the same systems at 10...
30 citations
TL;DR: The main result is that the standard Gibbs energies of transfer of the anion and cation of an amino acid are almost the same.
Abstract: The standard Gibbs energies of transfer of anions and cations of amino acids and small peptides across the water nitrobenzene interface were determined with the help of a novel electrochemical technique using three-phase electrodes. This is the first time that reliable data are reported for the anions of amino acids. The main result is that the standard Gibbs energies of transfer of the anion and cation of an amino acid are almost the same.
30 citations