Tetrapropyl orthotitanate appears as a clear yellow liquid with a mild fruity odor. Slightly denser than water and dissolves in water. May irritate skin, eyes, and mucous membranes.
1, 2, 4-Thiadiazol-5-Ylpiperazine derivatives useful in the treatment of neurodegenerative diseases
申请人:Griffioen Gerard
公开号:US20140128404A1
公开(公告)日:2014-05-08
The present invention relates to a compound of formula (IA) The present invention also relates to the use of the compound of formula IA for treating certain neurodegenerative disorders characterized by cytotoxic TAU misfolding and/or aggregation.
investigated. Aniline was reacted with titanium n‐butoxide (1) in the presence of carbon dioxide (5 MPa) to give the corresponding n‐butyl N‐phenylcarbamate (BPC) in nearly quantitative yield (99 %) within 20 min. Furthermore, 1 could be regenerated upon reaction with n‐butanol during water removal. The recovered 1 could then be reused in a subsequent reaction.
研究了在Ti(OR)4(R = n Bu(1),Me(2),Et(3),n Pr(4))存在下从胺和二氧化碳直接合成氨基甲酸酯的方法。在二氧化碳(5 MPa)存在下,苯胺与正丁醇钛(1)反应,在20分钟内以几乎定量的产率(99%)得到相应的正丁基N-苯基氨基甲酸酯(BPC)。此外,在脱水过程中与正丁醇反应后可再生1。恢复的1 然后可以在后续反应中重复使用。
Structural characterization of 0.5PbMg1/3Nb2/3O3–0.5BaxPb(1−x)TiO3 powders
effects caused by barium on phase formation, morphology and sintering of lead magnesium niobate–lead titanate (PMN–50PT). Ab initio study of 0.5Pb(Mg1/3Nb2/3)O3–0.5(BaxPb(1−x)TiO3) ceramic powders, with x = 0, 0.20, and 0.40 was proposed, considering that the partial substitution of lead by barium can reestablish the equilibrium of monoclinic–tetragonal phases in the system. It was verified that even for
cell (PEFC) conditions. Nanocrystalline Pt-Tialloyelectrocatalysts with a catalyst grain size of several nanometers have been successfully prepared by the colloidal and sol-gel method, characterized by X-ray diffraction, field-emission scanning electron microscope, scanning transmission electron microscope, energy-dispersive X-ray analysis, and X-ray photoelectron spectroscopy. Electrochemical activities
钛是最稳定的材料之一,在强酸性聚合物电解质燃料电池 (PEFC) 条件下保持不溶解。采用胶体和溶胶-凝胶法成功制备了催化剂粒径为几纳米的纳米晶Pt-Ti合金电催化剂,并通过X射线衍射、场发射扫描电子显微镜、扫描透射电子显微镜、能量色散X射线分析和 X 射线光电子能谱。电化学活性通过使用膜电极组件的电流-电压特性测量来评估,其中包含或不包含 100 ppm CO 的加湿 H 2 燃料、循环伏安法和在 0.1 M HClO 4 中的 CO 汽提伏安法。Pt-Ti 合金电催化剂表现出比纯 Pt 催化剂更高的电化学性能,即,