Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Karsten Koppe"'
Publikováno v:
Journal of Fluorine Chemistry. 182:22-27
Difluorotris(pentafluoroethyl)phosphorane, (C 2 F 5 ) 3 PF 2 , was found to be an active catalyst for the Michael addition reaction of 1,3-β-diketones or β-ketoesters (Michael donors) and linear or cyclic unsaturated ketones (Michael acceptors). Th
Publikováno v:
Journal of Fluorine Chemistry. 169:50-60
Difluorotris(pentafluoroethyl)phosphorane, (C 2 F 5 ) 3 PF 2 , was found to catalyze Diels–Alder reactions of α,β-unsaturated ketones or aldehydes with conjugated dienes or cyclodienes providing the cycloaddition products in high yields. Only a s
Publikováno v:
Inorganic Chemistry. 53:11640-11661
The [C6F5XeF2]+ cation is the only example of a XeIV–C bond, which had only been previously characterized as its [BF4]− salt in solution by multi-NMR spectroscopy. The [BF4]− salt and its new CH3CN and HF solvates, [C6F5XeF2][BF4]·1.5CH3CN and
Publikováno v:
ChemInform. 47
Difluorotris(pentafluoroethyl)phosphorane, (C 2 F 5 ) 3 PF 2 , was found to be an active catalyst for the Michael addition reaction of 1,3-β-diketones or β-ketoesters (Michael donors) and linear or cyclic unsaturated ketones (Michael acceptors). Th
Autor:
Aleksei B. Sheremetev, Michael Schulte, Nikolai V. Ignat'ev, Nina N. Makhova, Sergei G. Zlotin, Karsten Koppe, Peter Barthen, Anabela A. Valente
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 186:1205-1216
The advantages in the application of ionic liquids as reaction media in organic synthesis, i.e., in the preparation of chromane derivatives, substituted pyrazines, 4-aminofuran-2(5H)-ones, or in bromination of Levulinic acid or dehydration of alcohol
Publikováno v:
Inorganic Chemistry. 47:3205-3217
New examples of [C6F5Xe]+ salts of the weakly coordinating [BY4]- (Y = CN, CF3, or C6F5) anions were synthesized by metathesis of [C6F5Xe][BF4] with MI[BY4] (MI = K or Cs; Y = CN, CF3, or C6F5) in CH3CN at -40 degrees C, and were crystallized from CH
Publikováno v:
Inorganic Chemistry. 46:9425-9437
New examples of [C6F5Xe]+ salts of the weakly coordinating anions [B(CF3)4]-, [B(C6F5)4]-, [B(CN)4]-, and [B(OTeF5)4]- have been synthesized by metathesis reactions of [C6F5Xe][BF4] with the corresponding MI[BY4] salts (MI = K or Cs; Y = CF3, C6F5, C
Publikováno v:
ChemInform. 46
Difluorotris(pentafluoroethyl)phosphorane is shown to be a highly active catalyst for Diels—Alder reactions.
Electrochemical fluorination (Simons process) provides a cheap industrial access to a series of tris(perfluoroalkyl)difluorophosphoranes. These substances are a convenient starting material for the preparation of various perfluoroalkyl-phosphorus com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb7b880e83e5211ed0021609d683ee44
https://doi.org/10.1016/j.jfluchem.2014.10.007
https://doi.org/10.1016/j.jfluchem.2014.10.007
Publikováno v:
European Journal of Organic Chemistry. 2005:4963-4966
The preferred conformation of the tripyridoxycalixarene 1 in the crystalline state strongly depends on the applied solvents: The interaction with the clathrated solvent molecules influences the equilibrium between intra- and intermolecular hydrogen b