18395-45-4Relevant academic research and scientific papers
Novel synthesis of nucleoside 5′-phosphoramidates through reaction of nucleoside triphosphates with amines mediated by trimethylsilyl chloride
Zhu, Jigang,Han, Bo,Fu, Hua,Jiang, Yuyang,Zhao, Yufen
, p. 6676 - 6679 (2005)
Reaction of nucleoside triphosphates (NTPs) with amines in pyridine mediated by trimethylsilyl chloride produced nucleoside 5′- 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 formation of covalent enzyme-NMP (nucleoside 5′-monophosphate) intermediates in biological systems, which could provide a valuable clue for the enzymatic reactions.
Lifetime limit of tris(trimethylsilyl) phosphite as electrolyte additive for high voltage lithium ion batteries
Qi, Xin,Tao, Liang,Hahn, Hendrik,Schultz, Carola,Gallus, Dennis Roman,Cao, Xia,Nowak, Sascha,R?ser, Stephan,Li, Jie,Cekic-Laskovic, Isidora,Rad, Babak Rezaei,Winter, Martin
, p. 38342 - 38349 (2016/05/19)
The tris(trimethylsilyl) phosphite (TMSPi) is considered as an ideal electrolyte additive for lithium ion batteries. In this work, its positive effect as well as its failure mechanism in a LiPF6 containing electrolyte was studied by means of selected electrochemical, structural and analytical techniques. The LiNi0.5Co0.2Mn0.3O2/graphite cells with TMSPi as electrolyte additive were cycled between 2.8 and 4.6 V. Thanks to the compact cathode electrolyte interphase formed by the oxidative decomposition of TMSPi in a freshly prepared TMSPi containing electrolyte, both the discharge capacity and the cycling stability of cells were enhanced. However, our results also show that TMSPi actually reacts with LiPF6 at room temperature. TMSPi is consumed by this spontaneous reaction after aging for certain time. In addition, a part of the fluorophosphates, generated from the hydrolysis of LiPF6, is bonded to one or two TMS groups, causing a decrease in the fluorophosphate content in the CEI film. Consequently, the cycling stability of the lithium ion cells with aged TMSPi containing electrolyte deteriorates. The obtained results offer important insights into the practical application of TMSPi, which means that TMSPi can only be used as an effective additive in a freshly prepared LiPF6 containing electrolyte.
