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77-47-4Relevant academic research and scientific papers
Synthesis of Decorated Carbon Structures with Encapsulated Components by Low-Voltage Electric Discharge Treatment
Bodrikov, I. V.,Pryakhina, V. I.,Titov, D. Yu.,Titov, E. Yu.,Vorotyntsev, A. V.
, p. 60 - 69 (2022/03/17)
Abstract: Polycondensation of complexes of chloromethanes with triphenylphosphine by the action of low-voltage electric discharges in the liquid phase gives nanosized solid products. The elemental composition involving the generation of element distribution maps (scanning electron microscopy–energy dispersive X?ray spectroscopy mapping) and the component composition (by direct evolved gas analysis–mass spectrometry) of the solid products have been studied. The elemental and component compositions of the result-ing structures vary widely depending on the chlorine content in the substrate and on the amount of triphenylphosphine taken. Thermal desorption analysis revealed abnormal behavior of HCl and benzene present in the solid products. In thermal desorption spectra, these components appear at an uncharacteristically high temperature. The observed anomaly in the behavior of HCl is due to HCl binding into a complex of the solid anion HCI-2 with triphenyl(chloromethyl)phosphonium chloride, which requires a relatively high temperature (up to 800 K) to decompose. The abnormal behavior of benzene is associated with its encapsulated state in nanostructures. The appearance of benzene begins at 650 K and continues up to temperatures above 1300?K.
Isomerization of perchlorohexatriene in three consecutive rearrangements to perchloro-2-vinylbutadiene
Schollmeyer, Dieter,Detert, Heiner
, p. 843 - 846 (2017/02/18)
Perchlorohexatriene isomerizes in three subsequent rearrangements to perchloro-2-vinylbutadiene. A radical-induced Z-E-equilibration of linear perchlorohexatrienes is followed by cyclization to a methylenecyclopentene. Under flash-vacuum pyrolysis conditions, a ring contraction to 1,2-dimethylenecyclobutane occurs. In the condensed phase, a radical-induced ring opening generates the branched perchloro-vinylbutadiene. All compounds are converted to hexachlorobenzene, but only at very high temperatures.
TERPHENYLENE DERIVATIVES, TETRAHALOTERPHENYL DERIVATIVES AND PROCESSES FOR THE PRODUCTION OF BOTH
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Page/Page column 49, (2008/06/13)
The invention provides terphenylene derivatives which have excellent oxidation resistance and permit the formation of semiconductor active phases by coating; and oxidation-resistant organic semiconductor materials and organic thin films, made by using the same. The invention relates to production of terphenylene derivatives represented by the general formula (1) by tetralithiating a tetrahaloterphenyl derivative with a lithiating agent and then treating the obtained compound with a copper compound: (1) wherein R1 to R14 are each independently hydrogen, fluoro, chloro, aryl having 4 to 30 carbon atoms, alkynyl having 3 to 20 carbon atoms, alkenyl having 2 to 30 carbon atoms, alkyl having 1 to 20 carbon atoms, halogenated alkyl having 1 to 20 carbon atoms, or diarylamino having 8 to 30 carbon atoms; and l, m, and n are each an integer of 0 or 1.
Specificity and non-specificity in the sensitized CO2-laser-induced reaction of tetrachloroethene
Earl, Boyd L.,Titus, Richard L.
, p. 1593 - 1602 (2007/10/03)
Previous workers have investigated the reaction of tetrachloroethene using thermal initiation and CO2-laser initiation via sensitizing species. In both instances, the principal product was found to be hexachlorobenzene. One group reported evidence of laser specificity in this reaction, in that BCl3 acted as a sensitizer to produce hexachlorobenzene as the principal product, but SF6 and BBr3 did not. We have found that specificity is highly dependent on reaction conditions. We reproduced the previous results using similar experimental conditions, but under different conditions, we found that the specificity is lost, with all three sensitizers which we used (BCl3, SF6, and SiF4) sensitizing the reaction to produce mainly hexachlorobenzene. There were some differences among the sensitizers, as, for example, the fact that SF6 produced the most nearly pure hexachlorobenzene product.
Perchlorotriphenylene: A Compound with Severe Molecular Twisting?
Campbell, M. C.,Humphries, R. E.,Munn, N. M.
, p. 641 - 644 (2007/10/02)
Perchlorotriphenylene has been reported several times in the literature.However, there is inconclusive evidence that this compound has actually been prepared.Severe molecular twisting to relieve steric interactions of "ortho" chlorines may preclude any stable existence.The compound is discussed in context with other severely twisted molecules, and methods are proposed for its synthesis.
Conversion of conjugated diolefins to diacyloxy olefins
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, (2008/06/13)
A catalyst comprising a uranium compound, an alkali metal ion, and a halide, is effective to convert conjugated dienes in carboxylic acid media to diacyloxy olefins.