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441.
442.
Sustainable Heterogeneous Platinum Catalyst for Direct Methylation of Secondary Amines by Carbon Dioxide and Hydrogen
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Dr. Kenichi Kon Dr. S. M. A. Hakim Siddiki Wataru Onodera Dr. Ken‐ichi Shimizu 《Chemistry (Weinheim an der Bergstrasse, Germany)》2014,20(21):6264-6267
Pt and MoOx co‐loaded TiO2 is found to be highly effective for direct methylation of aliphatic and aromatic secondary amines by CO2 and H2 under solvent‐free conditions. This is the first additive‐free and reusable heterogeneous catalytic system with acceptable turnover number. 相似文献
443.
444.
We establish a necessary and sufficient condition under which the Shapley value of ann-person game lies in the core. 相似文献
445.
A stable tetramethylthiiranoradialene, 2,3-diisopropylidenethiirane , was prepared by pyrolysis of lithium salt of tosyl hydrazone of 2,2-dimethyl-4-isopropylidene-3-thietanone. The corrsponding sulfoxide was also prepared by oxidation of . 相似文献
446.
Wataru Ando Toshiya Furuhata Yukio Hanyu Toshikazu Takata 《Tetrahedron letters》1984,25(36):4011-4014
A variety of sulfur-containing five- and six-membered cyclic compounds was obtained by the acid-catalyzed and thermal reactions of an allene episulfide with various electrophiles. 相似文献
447.
448.
Vladimir Tuboltsev Alexander Savin Wataru Sakamoto Atsushi Hieno Toshinobu Yogo Jyrki Räisänen 《Journal of nanoparticle research》2011,13(11):5603-5613
Multiferroics conventionally refer to the materials exhibiting co-existing electric, magnetic, and structure order parameters.
Interplay between ferroelectricity, magnetism, and ferroelasticity in a single phase makes multiferroics truly multifunctional
providing control over magnetic and electric ordering by applying electric and magnetic fields, respectively. Incorporation
of multiferroic-based components into nanoscale applications will enable additional degrees of freedom in manipulating with
spin and charge not easily attainable otherwise. Multiferroic bismuth ferrite lead titanate has been chemically synthesized
in form of nanocrystalline films. The morphology of the films revealed a single perovskite phase confined within crystalline
grains of few tens of nm in size. The films were found to exhibit ferroelectricity and ferromagnetism with characteristic
electric polarization and magnetization hysteresis loops, transformations associated with spin reorientation in an external
magnetic field and the spin-glassy behavior well above the room temperature. High degree of magnetic frustration and disorder
in the spin system spatially confined in the nanograins, distribution of the grains anisotropy axis, inter-grain interactions,
and the effects of uncompensated spins on the large effective surface/interface favored by the nanocrystalline morphology
were assumed to be responsible for the anomalous magnetic properties and glassy dynamics in the films. 相似文献
449.
Kikuchi K Isono T Kojima M Yoshimoto H Kodama T Fujita W Yokogawa K Yoshino H Murata K Kaihatsu T Akutsu H Yamada J 《Journal of the American Chemical Society》2011,133(49):19590-19593
Dependence of the superconducting transition temperature (T(c)) and critial superconducting pressure (P(c)) of the pressure-induced superconductor β-(BDA-TTP)(2)I(3) [BDA-TTP = 2,5-bis(1,3-dithian-2-ylidene)-1,3,4,6-tetrathiapentalene] on the orientation of uniaxial strain has been investigated. On the basis of the overlap between the upper and lower bands in the energy dispersion curve, the pressure orientation is thought to change the half-filled band to the quarter-filled one. The observed variations in T(c) and P(c) are explained by considering the degree of application of the pressure and the degree of contribution of the effective electronic correlation at uniaxial strains with different orientations parallel to the conducting donor layer. 相似文献
450.
Mibu N Yokomizo K Uchida W Takemura S Zhou J Aki H Miyata T Sumoto K 《Chemical & pharmaceutical bulletin》2012,60(3):408-414
In terms of molecular symmetry and bioactivity, new C3- and CS-symmetrical derivatives based on the tris(2-aminoethyl)amine scaffold were designed and synthesized. The synthesized compounds were evaluated for antiviral activity with herpes simplex virus type 1 (HSV-1) by a plaque reduction assay and for cytotoxic activity with Vero cells. Most of the compounds showed no significant anti-HSV-1 activity, but some of the symmetrical derivatives showed high levels of cytotoxic activitiy. 相似文献