Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Boguslaw Kryczka"'
Publikováno v:
Tetrahedron. 69:9551-9556
An efficient and stereoselective synthesis of pyrrolidine-, piperidine-, and azepane-type N-heterocycles is described by the intramolecular Pd(0)-catalysed cyclisation of amino allylic carbonates. The use of chiral ligands gave the corresponding hete
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9003b3187333dc688a8850e16bb0698a
https://doi.org/10.1016/j.tet.2013.09.043
https://doi.org/10.1016/j.tet.2013.09.043
Autor:
Stanislaw Porwanski, Agnieszka Kubiak, Izabela Szulc, Beata Olszewska, Anna Zawisza, Boguslaw Kryczka
Publikováno v:
Tetrahedron: Asymmetry. 24:212-216
Optically active 3-alkyl-3-hydroxymethyl-5-vinyltetrahydrofurans were synthesised from the corresponding methyl or isobutyl carbonates of ω,ω-bis(hydroxymethyl)-α,β-unsaturated alcohols via palladium-catalysed cyclisation. The use of chiral ligan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f303091c8bb5be3e4c6c592dda3b560f
https://doi.org/10.1016/j.tetasy.2013.01.012
https://doi.org/10.1016/j.tetasy.2013.01.012
Publikováno v:
Tetrahedron Letters. 53:6826-6829
Optically active 2-vinylpyrrolidines and 2-vinylpiperidines were synthesised from the corresponding amino allylic carbonates via palladium-catalysed cyclisation. The use of chiral ligands gave the corresponding pyrrolidine and piperidine derivatives
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64a775b9223fc7a9ae8ab6ea6c9111da
https://doi.org/10.1016/j.tetlet.2012.10.014
https://doi.org/10.1016/j.tetlet.2012.10.014
Publikováno v:
Letters in Organic Chemistry. 9:563-567
The title reaction of alcohols (IIb)-(IIe) produces diastereomeric mixtures of the furan derivatives.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3c563f5b86981bb85829409dab8bd56b
https://doi.org/10.2174/157017812802850258
https://doi.org/10.2174/157017812802850258
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 264:110-118
The palladium(0)-catalyzed annulation of catechol with propargylic carbonates bearing different functionalized groups (hydroxy, tert-butyldimethylsilyloxy, ester, diethylamino) afforded functionalized 2,3-dihydro-2-ylidene-1,4-benzodioxin isomers. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c760418c56fd54d55660a94c76a229c
https://doi.org/10.1016/j.molcata.2006.08.087
https://doi.org/10.1016/j.molcata.2006.08.087
Autor:
Celine Damez, Paul Lhoste, Jean-Robert Labrosse, Denis Sinou, Boguslaw Kryczka, Bouchra Rhers, Norbert Dominczak
Publikováno v:
Tetrahedron
Tetrahedron, Elsevier, 2005, 61, pp.2589-2599. ⟨10.1016/j.tet.2005.01.084⟩
Tetrahedron, Elsevier, 2005, 61, pp.2589-2599. ⟨10.1016/j.tet.2005.01.084⟩
The palladium-catalyzed cyclization of benzene-1,2-diol with various racemic secondary propargyl carbonates having no acetylenic hydrogen in the presence of (R)-Binap as the chiral ligand afforded the two regioisomers of the corresponding 2,3-dihydro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84484c81f65b8ef2e66670194b14b740
https://doi.org/10.1016/j.tet.2005.01.084
https://doi.org/10.1016/j.tet.2005.01.084
Publikováno v:
ChemInform. 45
The racemic and chiral synthesis of 2-vinylpyrrolidines and 2-vinylpiperidines under the employment of several chiral phosphorous ligands with moderate to good enantioselectivities is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a43f29027edba4727c1bce33276e4949
https://doi.org/10.1002/chin.201411166
https://doi.org/10.1002/chin.201411166
Publikováno v:
Synthetic Communications. 31:3863-3870
Bis-glycosyloxy-arenes were prepared in very good yields by reaction of the bis-hydroxy-arene on the appropriate unsaturated glycosyl carbonate at room temperature in the presence of a palladium(0) catalyst.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::102c672d6a218171f2c56cdb1339d2a2
https://doi.org/10.1081/scc-100108238
https://doi.org/10.1081/scc-100108238
Publikováno v:
Journal of Carbohydrate Chemistry. 19:795-804
Unsaturated thiodisaccharides are obtained in good yields by alkylation of ethyl α-O-▵2-glycosides, having a leaving group at C-4, with various thiocarbohydrates in the presence of a catalytic amount of palladium(0). The reaction is regio- and ste
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9cbd015dd94d2c99f28fa4b5d555dd4a
https://doi.org/10.1080/07328300008544118
https://doi.org/10.1080/07328300008544118
Publikováno v:
Journal of Carbohydrate Chemistry. 17:1117-1130
Alkylation of ethyl 6-O-tert-butyldiphenylsilyl-4-O-methoxycarbonyl-2,3-dideoxy-α-D-erythro-hex-2-enopyranoside (1) with various peracetylated 1-hydroxy sugars in the presence of a catalytic amount of palladium(O) gave the corresponding unsaturated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9a7252441273f26ced29cdeac68a98de
https://doi.org/10.1080/07328309808001888
https://doi.org/10.1080/07328309808001888