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A M Saillenfait et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 43(7), 1055-1063 (2005-04-19)
The developmental toxicity of two trimethylbenzene isomers, mesitylene (1,3,5-trimethylbenzene) and pseudocumene (1,2,4-trimethylbenzene) was studied in Sprague-Dawley rats following inhalation exposure. Pregnant rats were exposed whole body to vapours of mesitylene (0, 100, 300, 600, and 1200 ppm) or pseudocumene (0
Toshifumi Dohi et al.
Chemical communications (Cambridge, England), (40)(40), 4152-4154 (2007-10-11)
We have found that the use of fluoroalcohol media greatly enhanced the efficiency and scope of the direct dehydrative condensation of arenes and hypervalent iodine(III) compounds; the present clean method has a broad range of applicability as well as unique
Dalit Rechavi et al.
Journal of the American Chemical Society, 126(25), 7738-7739 (2004-06-24)
Isotope effects for the encapsulation of deuterated versus nondeuterated guests are determined. This system involves the use of social isomers, and the origin of the isotope effect is localized to methyl groups interacting with aromatic rings.
Jacqueline M Veauthier et al.
Inorganic chemistry, 43(4), 1220-1228 (2004-02-18)
New bimetallic mu-oxo diferric complexes of several previously reported calix[4]pyrrole Schiff base macrocycles are described. The synthesis of a new member of this class of macrocycles is also reported; it was prepared via an acid-catalyzed condensation between 1,9-bisformyl-5,5-dipropyldipyrromethane and o-phenylenediamine.
Natalie D Coombs et al.
Dalton transactions (Cambridge, England : 2003), (3)(3), 332-337 (2008-04-17)
Sterically encumbered amido ligands based on a 1,8-diarylcarbazol-9-yl backbone have been investigated as electronically distinct alternatives to the widely-used terphenyl ligand class in the stabilization of low-coordinate metal complexes, and structurally characterized for the first time. While 1,8-diphenylcarbazol-9-yl derivatives are
Kuwahara Yasutaka et al.
The journal of physical chemistry. B, 115(34), 10335-10345 (2011-07-23)
An oxidative enzyme, horseradish peroxidase (HRP), was immobilized on phosphorus- and/or calcium-modified MCM-41 mesoporous silicas with suitable pore diameters. Structural analyses by means of XRD and nitrogen adsorption confirmed that the P- and/or Ca-modified MCM-41 materials retained their structural quality
Sanyog Sharma et al.
Organic & biomolecular chemistry, 11(4), 654-661 (2012-12-12)
Two mesitylene based probes, having catechol/phenol units in conjunction to the Schiff base have been synthesized. The probe with a catechol unit can be used to sense and discriminate between F(-) and CN(-) through different colorimetric and fluorimetric responses using
David Kokel et al.
Chembiochem : a European journal of chemical biology, 7(12), 2010-2015 (2006-10-20)
Benzene is a human carcinogen that might act through both genotoxic and nongenotoxic mechanisms to promote tumorigenesis. The genotoxic effects of benzene are well established, however, its potential nongenotoxic roles in carcinogenesis are poorly understood. We find that benzene suppresses
Claudio Evangelisti et al.
Journal of nanoscience and nanotechnology, 8(4), 2096-2101 (2008-06-25)
Pt nanoclusters have been generated by reaction of Pt vapour and mesitylene vapour and the role of the mesitylene/platinum ratio and the Pt particle size has been evaluated, quenching the resulting mesitylene solvated Pt atoms with 1,3-divinyltetramethyldisiloxane (DVS) as additional
Beata Janasik et al.
International archives of occupational and environmental health, 81(4), 443-449 (2007-08-08)
To investigate elimination of unchanged volatile organic compounds (VOC's) through urine and the use of respective data for occupational exposure assessment, six volunteers were exposed under controlled conditions to toluene (TOL), ethylbenzene (EB), xylene (XYL) and mesitylene (MES) at concentrations
Sarah J Jackson et al.
Rapid communications in mass spectrometry : RCM, 22(24), 4158-4164 (2008-11-29)
Previous gas chromatography/mass spectrometry (GC/MS) methods for determining nitrate in biological samples involve either hazardous chemicals or produce multiple isomers that can be difficult to quantitate. Modification of these methods, by the nitration of mesitylene instead of benzene and in
M Prager et al.
Physical chemistry chemical physics : PCCP, 7(13), 2587-2593 (2005-09-29)
Mesitylene can be stabilized at He temperature in three solid phases of so far unknown crystal structures. Rotational tunneling of methyl groups is based on rotational potentials and used to characterize structural aspects. In phase III found after the first
Simon Duttwyler et al.
The Journal of organic chemistry, 78(5), 2134-2138 (2012-11-21)
The arenium acid [mesitylene-H](+) has been shown to be an extraordinarily active H/D exchange catalyst for the perdeuteration of polycyclic aromatic hydrocarbons. The reactions take place under ambient conditions in C6D6 as an inexpensive deuterium source. High isolated yields and
Grant Von Wald et al.
Journal of chromatography. A, 1216(31), 5927-5930 (2009-06-30)
A procedure for using ionic liquids to determine volatile impurities in compounds or matrices that are soluble in an ionic liquid is described. Using a conventional autosampler a droplet of ionic liquid solution is suspended in the inlet of the
Michael Cushion et al.
Dalton transactions (Cambridge, England : 2003), (9)(9), 1632-1635 (2009-05-08)
The new sterically encumbered facially coordinating N(3)-donor ligand cis,cis-1,3,5-tris(mesitylideneimino)cyclohexane (L1) has been synthesised. Reaction with [Cu(NCCH(3))(4)]PF(6) gives [Cu(L1)NCCH(3)]PF(6) (1), the bound acetonitrile being labile and readily replaced by CO to yield [Cu(L1)CO]PF(6) (2); both 1 and 2 have been structurally
Alessandro Scarso et al.
Journal of the American Chemical Society, 126(41), 13512-13518 (2004-10-14)
The reversible encapsulation of a series of normal alkane guests in a cylindrical host was studied by NMR methods. For small hydrocarbons such as n-pentane or n-hexane, two guests enter the host, and they move freely within. With n-heptane no
Soon Bang Kang et al.
The Journal of organic chemistry, 72(15), 5724-5730 (2007-06-28)
Facile synthesis of C-4 aryl pyrimidinone nucleoside analogues from an easily prepared O4-arylsulfonate derivative of thymidine is reported. Two O4-arylsulfonylthymidine precursors, (4-methylphenyl)sulfonyl and (2,4,6-trimethylphenyl)sulfonyl, were prepared and analyzed for their stabilities. Of the two, the latter possessed suitable stability as
Dorota Wiaderna et al.
International journal of occupational medicine and environmental health, 15(4), 385-392 (2003-03-01)
Trimetylbenzene isomers: pseudocumene, hemimellitene and mesitylene, are major components of numerous commercial solvents and high-grade fuels. In our earlier research on rats we have proved that inhalation exposure to pseudocumene or hemimellitene at concentrations close to the MAC value results
Zachariah M Heiden et al.
Inorganic chemistry, 50(4), 1470-1479 (2011-01-28)
The series of o-benzylphosphino-boranes, o-(R(2)B)C(6)H(4)CH(2)PtBu(2) (R = Cl 3, Ph 4, Cy 6, C(6)F(5) 7, Mes 8) and o-(BBN)C(6)H(4)CH(2)PtBu(2) (5), were synthesized from reactions of the respective chloroboranes with the lithiated benzyl-phosphine. In an analogous fashion, the α-methylbenzyl(N,N-dimethyl)amine-boranes o-(R(2)B)C(6)H(4)CH(Me)NMe(2) (R
Toru Amaya et al.
Journal of the American Chemical Society, 126(43), 14149-14156 (2004-10-28)
We describe here the behavior of the hydrogen-bonded capsule 1.1 and its complexes in protic solvents. The kinetics and thermodynamics of the encapsulation process were determined through conventional (1)H NMR methods. The enthalpies and entropies of encapsulation are both positive
Changxia Yuan et al.
Nature, 499(7457), 192-196 (2013-07-13)
Methods for carbon-hydrogen (C-H) bond oxidation have a fundamental role in synthetic organic chemistry, providing functionality that is required in the final target molecule or facilitating subsequent chemical transformations. Several approaches to oxidizing aliphatic C-H bonds have been described, drastically
John W Colson et al.
Science (New York, N.Y.), 332(6026), 228-231 (2011-04-09)
Covalent organic frameworks (COFs), in which molecular building blocks form robust microporous networks, are usually synthesized as insoluble and unprocessable powders. We have grown two-dimensional (2D) COF films on single-layer graphene (SLG) under operationally simple solvothermal conditions. The layered films
Elizabeth L Hommel et al.
The Analyst, 128(6), 750-755 (2003-07-18)
The air-liquid interface and the liquid-phase of benzene, toluene, 1,3-dimethylbenzene, and 1,3,5-trimethylbenzene are studied using broad bandwidth sum frequency generation spectroscopy, Raman and infrared spectroscopy. A vibrationally resonant sum frequency response is observed from these surfaces in spite of the
Xiaoyuan Zhou et al.
ChemSusChem, 6(2), 383-388 (2013-01-03)
We report the one-pot alkylation of mesitylene with carbohydrate-derived 5-(hydroxymethyl)furfural (HMF) as a step toward diesel-range liquids. Using FeCl(3) as a catalyst, HMF is shown to alkylate toluene, xylene, and mesitylene in high yields in CH(2)Cl(2) and MeNO(2) solvents. Efforts
Eric J Werner et al.
Contrast media & molecular imaging, 4(5), 220-229 (2009-10-20)
A series of new Gd(III) hydroxypyridonate complexes featuring a mesitylene (ME)-derived ligand cap has been prepared. Relaxometric characterization reveals that the complexes tend to form large aggregates in solution with slow tumbling rates, as estimated from NMRD analysis, and unique
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