Zobrazeno 1 - 10
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pro vyhledávání: '"N. Llewellyn Lancaster"'
Publikováno v:
The Journal of Organic Chemistry. 71:8847-8853
In this paper, we report the effect of ionic liquids on substitution reactions using a variety of anionic nucleophiles. We have combined new studies of the reactivity of polyatomic anions, acetate, trifuoroacetate, cyanide, and thiocyanide, with our
Publikováno v:
Journal of the American Chemical Society. 126:11549-11555
In this work we report the effect of ionic liquids on a class of charge-neutral nucleophiles. We have studied the reactions of (n)butylamine, di-(n)butylamine, and tri-(n)butylamine with methyl p-nitrobenzenesulfonate in [bmpy][N(Tf)(2)], [bmpy][OTf]
Autor:
Tom Welton, N. Llewellyn Lancaster
Publikováno v:
The Journal of Organic Chemistry. 69:5986-5992
We have continued the study of halide nucleophilicity in ionic liquids, concentrating on the effect of changing the anion ([BF4]-, [PF6]-, [SbF6]-, [OTf]-, and [N(Tf)2]-) when the cation is [bmim]+...
Autor:
N. Llewellyn Lancaster
Publikováno v:
ECS Proceedings Volumes. :190-199
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :2267-2270
The relative nucleophilicity of chloride, bromide and iodide anions in [bmim][BF4] ionic liquid has been measured by studying their reaction with methyl p-nitrobenzenesulfonate ([bmim] = 1-butyl-3-methylimidazolium cation). It has been found that iod
Autor:
Ross W. Millar, Robert P. Claridge, Roy B. Moodie, John P. B. Sandall, N. Llewellyn Lancaster
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :197-200
The reaction of 1-chloro-2-nitrobenzene with dinitrogen pentoxide in dichloromethane catalysed by H-faujasite zeolites F-712, F-720, F-780 and F-901, giving 1-chloro-2,4-dinitro- and 1-chloro-2,6-dinitrobenzene in approximately 30∶1 ratio, is a kin
Autor:
Ross W. Millar, John P. B. Sandall, Robert P. Claridge, N. Llewellyn Lancaster, Roy B. Moodie
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1815-1818
The reactions of 2-nitrotoluene, 1-chloro-2-nitrobenzene, and 1-chloro-4-nitrobenzene with dinitrogen pentoxide in dichloromethane at 0 °C are strongly catalysed by some zeolites notably H-Faujasite-720, catalysis by which is investigated in detail.
Publikováno v:
ChemInform. 37
Since the discovery of organic salts that are liquid at room temperature and stable to both air and water; ambient-temperature ionic liquids have attracted growing interest as solvents for organic synthesis, using both stoichiometric and catalytic me
Autor:
N. Llewellyn Lancaster
Publikováno v:
ChemInform. 36
Ionic liquids have been advanced as alternative solvents for organic reactions. In this paper, the principal findings of studies on nucleophilic substitutions in ionic liquids are reviewed. Thus our examination of halides (Cl-, Br- and I) in a range
Publikováno v:
ACS Symposium Series ISBN: 9780841238947
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bdcbeefb0112616208766bfa68f5fb5e
https://doi.org/10.1021/bk-2005-0902.ch017
https://doi.org/10.1021/bk-2005-0902.ch017