Topic
Aromatic hydrocarbon
About: Aromatic hydrocarbon is a research topic. Over the lifetime, 5814 publications have been published within this topic receiving 55499 citations. The topic is also known as: arene & arenes.
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33 citations
Patent•
03 Apr 1991
TL;DR: In this article, a process for the preparation of aromatic beta-diketones having the structural formula (see formula I) by the reaction of an acetophenone and a molar excess of an alphatic ester or an ester of benzoic acid in the presence of sodium alkoxide condensation agent in an aromatic hydrocarbon solvent is described.
Abstract: A process for the preparation of aromatic beta-diketones having the structural formula (see formula I) by the reaction of an acetophenone and a molar excess of an alphatic ester or an ester of benzoic acid in the presence of sodium alkoxide condensation agent in an aromatic hydrocarbon solvent. Also disclosed is a method of recycling the solvent and excess ester reactant after separation of the aromatic beta-diketone product.
33 citations
TL;DR: Aromatic hydrocarbon fractions extracted from different depths of a core (13.8-47.3 m deep) of the Paraiba Valley oil shale were analysed by computerized high resolution gas chromatography-mass spectrometry.
33 citations
TL;DR: In this article, typical model compounds from bio-oil molecular distillation were used for the generation of aromatic hydrocarbons by cocracking with ethanol over HZSM-5.
Abstract: The distilled fraction (DF) from bio-oil molecular distillation can be used for the generation of aromatic hydrocarbons by cocracking with ethanol over HZSM-5. In this work, typical model compounds...
32 citations
TL;DR: The pK(a) calculations indicate that the chromophore, i.e., the product of the ninhydrin-like reaction showing the blue color, is deprotonated in neutral aqueous solution, and the corresponding protonated structure has a different color as it absorbs in the blue region of the visible spectrum, and its chromogenic contribution in solution at low pH.
Abstract: We report the first computational study of the chromophores responsible for the chromogenic effects of aromatic neurotoxicants containing a 1,2-diacetyl moiety in their oxidation metabolites. A series of ab initio electronic structure calculations was performed on two representative aromatic compounds, 1,2-diacetylbenzene (1,2-DAB) and 1,2-diacetyl tetramethyl tetralin (1,2-DATT), the putative active metabolites of the neurotoxic aromatic hydrocarbon compounds 1,2-diethylbenzene (1,2-DEB) and acetyl ethyl tetramethyl tetralin (AETT), and on the products of their possible reactions with proteins that result in chromogenic effects. The electronic excitation energies determined by three different computational approaches were found to be consistent with each other. The calculated results are consistent with the conclusion/prediction that the chromogenic effects of 1,2-DAB (or 1,2-DEB) and 1,2-DATT (or AETT) could result from ninhydrin-like reactions, rather than the formation of pyrrole-like compounds. Our p...
32 citations