Výsledky vyhledávání - "Sergej Pasenok"

Difluoromethylation of Amines with Zn(CF3)Br · 2 CH3CN, Cd(CF3)2 · 2 CH3CN and the System Bi(CF3)3/AlCl3

Autor: Dieter Naumann, Natalya V. Kirij, Yu.L. Yagupolskii, Wieland Tyrra, A. Fitzner, Sergej Pasenok

Publikováno v: Zeitschrift für anorganische und allgemeine Chemie. 625:834-838

The reactions of Zn(CF3)Br · 2 CH3CN, Cd(CF3)2 · 2 CH3CN or Bi(CF3)3/AlCl3 with tertiary amines lead to the formation of quaternary ammonium salts of the general formula [R3NCF2H]X. The reaction of 4-N,N-dimethylaminopyridine with Zn(CF3)Br · 2 CH

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::38004cd07e4e886f576b428875fabc15
https://doi.org/10.1002/(sici)1521-3749(199905)625:5<834::aid-zaac834>3.0.co

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Utilisation of ammonium and phosphonium perfluorocyclobutane ylides as fluoride anion source

Autor: Wolfgang Appel, Sergej Pasenok, Marijn E. de Roos

Publikováno v: Tetrahedron. 52:9755-9758

Ammonium- and phosphoniumperfluorocyclobutane ylides 1 and 2, prepared from perfluorocyclobutene and tertiary amines or phosphines can be used as a masked fluoride anion source. These properties have been demonstrated in several reactions. Ylides 1 a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0155e83a107ebe227d7195a5e91b613c
https://doi.org/10.1016/0040-4020(96)00507-8

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New method of preparation of fluoro compounds via utilisation of ammonium and phosphonium perfluorocyclobutane ylides as fluorination reagents

Autor: Wolfgang Appel, Marijn E. de Roos, Sergej Pasenok

Publikováno v: Tetrahedron. 52:2977-2982

Ammonium- and phosphoniumperfluorocyclobutane ylides (7–11), easily prepared from perfluorocyclobutene (1) and tertiary amines (2–4) or phosphines (5,6), smoothly react with primary or secondary alcohols (12–18) and carboxylic acids (19,20) wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3ce67d53d019d7db42c43411bb14a19
https://doi.org/10.1016/0040-4020(96)00019-1

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Synthesis and properties of fluorinated oxo- and thioxo-(p-dimethylaminopyridinium)cyclobetaines

Autor: Wolfgang Appel, Sergej Pasenok

Publikováno v: Journal of Fluorine Chemistry. 75:137-142

The interaction of 1,2-dichloroperfluorocycloolefins with p-dimethylaminopyridine (DMAP) leads to the formation of 1,2-bis[4-dimethylamino)pyridinium-1-yl]fluorocycloalkene dichlorides, which can be transformed to the corresponding dioxo-, oxothioxo-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::267cba933dba5d0d68e80a60650f21c7
https://doi.org/10.1016/0022-1139(95)03314-8

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Carbenoid reactions of trifluoromethylelement compounds. Part 4. Reactions of trifluoromethylzinc bromide with enamines and methylene bases

Autor: Sergej Pasenok, Dieter Naumann, Wieland Tyrra, Yurii L. Yagupolskii

Publikováno v: Journal of Fluorine Chemistry. 70:181-185

The reactions of ZnBr(CF 3 )·2CH 3 CN with 1-morpholinocyclo-pentene and -hexene have been investigated and found to yield mixtures of two isomers of 1-morpholino-1-cyanomethyl-2-difluoromethyl-cyclopentane and -hexane, respectively. The interaction

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::412d6131de0884afe28969591a5f386c
https://doi.org/10.1016/0022-1139(94)03114-f

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Synthesis and characterization of aryl(trifluoromethyl)bismuth compounds (R-C6H4)3-nBi(CF3)n [R=H, 4-CH3, 4-CF3, 3-F, 4-F; n=1 and 2] and the reactions of (C6H5)3-nnBi(CF3)n [n=0–3] with benzoylpyridinium chloride

Autor: Yu.L. Yagupolskii, Dieter Naumann, Wieland Tyrra, Natalya V. Kirij, Sergej Pasenok

Publikováno v: Journal of Fluorine Chemistry. 69:219-223

The partly new derivatives (R-C 6 H 4 )BiBr 2 and (R-C 6 H 4 ) 2 BiCl (R=4-CH 3 , 4-CF 3 , 3-F, 4-F) have been prepared from the redistribution reactions of the corresponding triarylbismuth compounds with BiBr 3 and BiCl 3 , respectively. Metathesis

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ee53273d6e973ad847ec5f46c062850f
https://doi.org/10.1016/0022-1139(94)03134-7

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Synthesis of bismuthio methanides containing the RfSO2 group, (C6H5)3Bi=C(SO2Rf)2 [Rf=CF3, n-C4F9, OCH2CF2CF2H]

Autor: Sergej Pasenok, Dieter Naumann, Yurij L. Yagupolskii, Wieland Tyrra, Natali V. Kirij

Publikováno v: Journal of Fluorine Chemistry. 66:75-78

Bismuthio methanides (C 6 H 5 ) 3 Bi=C(SO 2 R f ) 2 (R f =CF 3 , n-C 4 F 9 , OCH 2 CF 2 CF 2 H) can be obtained as colourless solids from the sodium derivatives of the corresponding methanes with (C 6 H 5 ) 3 BiCl 2 in c. 90% yield. The compounds hav

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::20e02ce70c9d322d5cb0377a214acb7e
https://doi.org/10.1016/0022-1139(93)02898-o

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