Výsledky vyhledávání - "Lech Łuczak"

P-chiral thioxophosphoranesulfenyl chlorides RR'P(S)SCL. A unique stereochemical probe to study nucleophilic displacement at a dicoordinate sulfur center

Autor: Lech Łuczak, Jan Michalski, Andrzej Łopusiński

Publikováno v: Tetrahedron. 54:9731-9746

A stereospecific synthesis of P-chiral sulfenyl chlorides 6a,b has been developed from P-chiral sulfenylamide 9a,b,c by a novel procedure employing 2Me 3 SiCl + 2EtOH as the reagent of choice. The sulfenylamides 9a,b,c were prepared either by stereos

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b430fa74dd770f615d807852e6df1034
https://doi.org/10.1016/s0040-4020(98)00529-8

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Structure and dynamics of bis(organothiophosphoryl) disulfides in the solid state. X-Ray diffraction and cross-polarization magic angle spinning nuclear magnetic resonance studies

Autor: Jaroslaw Blaszczyk, Lech Łuczak, Pawel Knopik, Michał W. Wieczorek, Marek J. Potrzebowski, Jan Michalski

Publikováno v: J. Chem. Soc., Dalton Trans.. :2749-2757

The structure and dynamics of selected bis(organothiophosphoryl) disulfides have been studied by single-crystal X-ray diffraction and high-resolution solid-state NMR spectroscopy. The crystal and molecular structures of bis[tert-butyl(phenyl)thiophos

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1329392dc9b07863476ab06acd90e946
https://doi.org/10.1039/dt9930002749

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P-Chiral Thioxaphosphoranesulphenyl Chlorides RR1P(S)SC1. A New Tool in Stereochemistry of Organophosphorus-Sulphur Compounds

Autor: Lech Łuczak, Andrzej Łopusiński, Jan Michalski

Publikováno v: Phosphorus, Sulfur, and Silicon and the Related Elements. :115-118

Phosphoranesulphenyl halides of the general formula RR'P(Y)SX and their selenium analogues RR'P(Y)SeX (X=Cl,Br; Y=O,S) have been shown to be useful intermediates for access to many new classes of compounds con-taining phosphorus, sulphur, or selenium

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::490791865fb0924455bec4a8c3cb71f3
https://doi.org/10.1080/10426509008038920

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Stereospecific synthesis of P-epimeric (Sp,Sp)-bis-[(–)-menthyloxy(phenyl)thiophosphoryl] disulphide. An unusual case of steric selection

Autor: Lech Łuczak, Jan Michalski, Maria Gdaniec, Andrzej Łopusiński, Anna E. Koziol

Publikováno v: J. Chem. Soc., Chem. Commun.. :889-890

Iodine–water oxidation of compound 1, condensation of 1 with (R)p-7 together with the reaction of the latter with trimethylsilyl azide results in the formation of stable (S)p(S)p-2.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::913e91cc73de63f4eed6a5d8e14e7707
https://doi.org/10.1039/c39910000889

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A New Approach towards Organophosphorus Sulfenyl and Selenyl Halides

Autor: Lech Łuczak, Barbara Jezierska, Marek J. Potrzebowski, Andrzej Łopusiński, Jan Michalski

Publikováno v: Phosphorous and Sulfur and the Related Elements. 30:221-224

We describe new highly effective methods leading to compounds of general formula 1 and 2 including chiral diaste-reoisomeric systems 1, (Y=S, X=Cl) containing the asymmetric phosphorus center. Some aspects of the reaction between organophosphorus dit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69b1a12e226eee13e47d3d23e883b1b7
https://doi.org/10.1080/03086648708080562

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