765-48-0Relevant articles and documents
AMMONIUM SALT, ELECTROLYTE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY USING THEM
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Paragraph 0051; 0065, (2017/12/01)
PROBLEM TO BE SOLVED: To provide: ammonium salt with low viscosity; an electrolyte for a lithium secondary battery; and the lithium secondary battery. SOLUTION: This invention relates to an ammonium salt expressed by the following chemical formula (1). SELECTED DRAWING: None COPYRIGHT: (C)2018,JPO&INPIT
Hydroamination/cyclization of aminoalkenes using cationic zirconocene and titanocene catalysts
Gribkov, Denis V.,Hultzsch, Kai C.
, p. 5542 - 5546 (2007/10/03)
Alternative catalysts: The hydroamination of nonactivated double bonds has been the domain of rare-earth-metal catalysts. Now alkyl zirconocene and titanocene cations, which are readily prepared from commercially available precursors, are shown to be active catalysts in the hydroamination/cyclization of secondary aminoalkenes to give tertiary pyrrolidines and piperidines.
Highly Selective Aromatic Chlorination. Part 3. Kinetics and Mechanism of Chlorination of Electron-rich Aromatic Compounds by N-Chloroamines in Acidic Solution
Smith, John R. Lindsay,McKeer, Linda C.,Taylor, Jonathan M.
, p. 1529 - 1536 (2007/10/02)
The highly selective chlorination of electron-rich aromatic compounds with N-chloroamines in trifluoroacetic acid (TFA) is first order in both the aromatic substrate and the chlorinating agent.Kinetic and competitive kinetic studies show that electron-donating substituents on the substrate and electron-withdrawing substituents on the N-chloroamine have a marked rate-enhancing effect.Two mechanisms that fit the experimentally observed kinetics and that account for the high selectivity for 4-chlorination in terms of an electronic effect are proposed, namely an arenium-ion mechanism and an electron-transfer chain reaction.Evidence from chemical trapping experiments and from other studies suggest that for the majority of the substrates the chlorination proceeds by the arenium ion mechanism.However, for substrates, such as 1,4-dimethoxybenzene, that are very susceptible to one-electron oxidation chlorination may proceed at least in part by the electron-transfer chain reaction.