Synthesis and Characterization of Silylated Phosphonium [P(OSiMe<sub>3</sub>)<sub>4</sub>]<sup>+</sup> and Phosphate [O<sub>2</sub>P(OSiMe<sub>3</sub>)<sub>2</sub>]<sup>−</sup> Salts
to the protonated species, phosphoric acid (H3PO4) reaction of OP(OSiMe3)3 with a base led to the formation of the unknown [O2P(OSiMe3)2]− anion, which could be crystallized as potassium salt and structurally characterized, too. Both [P(OSiMe3)4]+ and [O2P(OSiMe3)2]− can be regarded as the formal autoprotolysis products of OP(OSiMe3)3.
The reaction between amines and carboxylic aicds in the presence of polyphosphoric acid trimethylsilyl ester (PPSE) has been investigated from the view point of the synthesis of amides and amidines. Benzanilide was selectively prepared from benzoic acid and aniline in the presence of PPSE and pyridine at 100 °C, whereas a mixture of benzanilide and N,N′-diphenylbenzamidine was obtained without the
从合成酰胺和脒的角度研究了胺和羧酸在多磷酸三甲基甲硅烷基酯(PPSE)存在下的反应。在 PPSE 和吡啶的存在下,在 100°C 下,苯甲酸和苯胺有选择地制备苯甲酰苯胺,而在不使用吡啶的情况下获得苯甲酰苯胺和 N,N'-二苯基苯甲脒的混合物。在 160 °C 下的反应几乎完全得到 N,N'-二苯基苯甲脒。通过简单地在 160 °C 下与四摩尔量的 PPSE 加热,可以从羧酸和芳香胺的组合中以高产率获得各种对称脒。在相同条件下,脂肪族和芳香族胺与 N-单取代和 N,N-二取代酰胺的反应也得到相应的不对称脒。
Novel Synthesis of Nucleoside 5‘-Phosphoramidates through Reaction of Nucleoside Triphosphates with Amines Mediated by Trimethylsilyl Chloride
Reaction of nucleoside triphosphates (NTPs) with amines in pyridine mediated by trimethylsilyl chloride produced nucleoside5‘-phosphoramidates in moderate yields without any preprotection of nucleosides and amino acid methyl esters. The reaction pathway is very similar to the mechanism of the RNA capping reaction, DNA or RNA ligation reaction, and catalysis of hydrolases and nucleases involving the
For the first time, a failure mechanism of tris(trimethylsilyl) phosphite (TMSPi) in a LiPF6 containing electrolyte is proposed and elucidated by means of selected electrochemical, structural and analytical techniques. The...
ELECTROLYTIC SOLUTION FOR NON-AQUEOUS ENERGY STORAGE DEVICE AND LITHIUM ION SECONDARY BATTERY
申请人:Asahi Kasei Kabushiki Kaisha
公开号:US20150099193A1
公开(公告)日:2015-04-09
A lithium ion secondary battery that operates at a high voltage, has a high cycle life, and generates less gas, and an electrolytic solution for such a lithium ion secondary battery. An electrolytic solution for a non-aqueous energy storage device, comprising: a non-aqueous solvent; a lithium salt (A) having no boron atom; a predetermined lithium salt (B) containing a boron atom; and a compound (C) in which at least one of hydrogen atoms in an acid selected from the group consisting of proton acids having a phosphorus atom and/or a boron atom, sulfonic acids, and carboxylic acids is replaced with a substituent represented by formula (3):
wherein R
3
, R
4
, and R
5
each independently represent an organic group which has 1 to 10 carbon atoms and which may have a substituent.