Výsledky vyhledávání - "Patrick Liptau"

Bis(diphenylphosphino)acetonitrile: Synthesis, ligand properties and application in catalytic carbon–carbon coupling

Autor: Leonie Braun, Gerald Kehr, Gerhard Erker, Roland Fröhlich, Juri Ugolotti, Patrick Liptau

Publikováno v: Dalton Trans.. :1409-1415

Treatment of acetonitrile (1 equiv.) with n-butyllithium (0.95 equiv.) followed by chlorodiphenylphosphine (0.95 equiv.) under optimised reaction conditions gave a ca. 60% yield of bis(diphenylphosphino)acetonitrile (dppmCN, 1). The bidentate ligand

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db93ea9fe52cdedfcfa461bd85ee5e39
https://doi.org/10.1039/b616847g

Zobrazit plný text záznamu

Preparation of Enantiomerically Pure [3]Ferrocenophane-Based Chelate Bis-Phosphane Ligands and Their Use in Asymmetric Alternating Carbon Monoxide/Propene Copolymerization

Autor: Roland Fröhlich, Gerhard Erker, Frank Hollmann, Gerald Kehr, Ludger Tebben, Bernhard Rieger, Patrick Liptau

Publikováno v: European Journal of Organic Chemistry. 2005:1909-1918

An intramolecular Mannich reaction (HNMe2, TiCl4) was used to convert 1,1'-diacetylferrocene to the unsaturated amino[3]ferrocenophane 2. Subsequent hydrogenation gave 3. To obtain enantiomerically pure chelate P,P-[3]ferrocenophane ligands the readi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33836a14e7a32ca5cb17d80a63dfc12e
https://doi.org/10.1002/ejoc.200400866

Zobrazit plný text záznamu

Responsive Iron Neighboring Group Participation in Amino-Substituent-Stabilized [3]Ferrocenophane α-Carbenium Ions: A Combined Theoretical and Experimental Study

Autor: Gerhard Erker, Markus Neumann, Stefan Grimme, Gerald Kehr, Roland Fröhlich, Patrick Liptau

Publikováno v: Organometallics. 23:21-25

Treatment of the dimethylamino-[3]ferrocenophane 1a with B(C6F5)3 results in hydride abstraction at the −CH(NMe2) moiety in α-position to the ferrocene nucleus to yield the corresponding cation 4a....

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0cb0a9014d0cf0c61b60c9bc4314bd17
https://doi.org/10.1021/om034214b

Zobrazit plný text záznamu

Preparation of Optically Active α‐Amino[3]ferrocenophanes − Building Blocks for Chelate Ligands in Asymmetric Catalysis

Autor: Patrick Liptau, Roland Fröhlich, Gerhard Erker, Birgit Wibbeling, Gerald Kehr, Ludger Tebben

Publikováno v: European Journal of Inorganic Chemistry. 2003:3590-3600

Treatment of 1,1′-diacetylferrocene (4) with dimethylamine and TiCl4 yielded the unsaturated dimethylamino-substituted [3]ferrocenophane product 5. Its catalytic hydrogenation gave the corresponding saturated [3]ferrocenophane system 6 (trans/cis �

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::50dd3311a232e8dcba8a158cb14ff72d
https://doi.org/10.1002/ejic.200300152

Zobrazit plný text záznamu

Formation of a Chelate Bis(phosphino)[3]ferrocenophane Ligand and Its Use in Palladium-Catalyzed Alternating CO/Ethene Copolymerization

Autor: Gerald Kehr, Stefan Grimme, Takashi Seki, Roland Fröhlich, Alexandra Abele, Gerhard Erker, Patrick Liptau

Publikováno v: Organometallics. 22:2226-2232

Treatment of 1,1‘-diacetylferrocene (1) with dimethylamine, catalyzed by titanium tetrachloride, proceeded in a Mannich-type C−C coupling reaction to yield the unsaturated [3]ferrocenophane 2. Subs...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5c54937562c7e4cd2fe52e888f396642
https://doi.org/10.1021/om030076e

Zobrazit plný text záznamu

Formation and structural characterization of amino-substituted [3]ferrocenophanes derived from intramolecular Mannich-type coupling reactions at the metallocene framework

Autor: Patrick Liptau, Olga Kataeva, Gerald Kehr, Gerhard Erker, Roland Fröhlich, Stephanie Knüppel

Publikováno v: Journal of Organometallic Chemistry. :621-630

Treatment of lithium(1-dimethylamino-ethenyl)cyclopentadienide (5a) with FeCl2 generated the corresponding substituted ferrocene (2a) that rapidly underwent cyclization in a subsequent Mannich-type condensation reaction to yield the unsaturated dimet

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3ed333a0117cad7cae81681f6623e5c9
https://doi.org/10.1016/s0022-328x(01)01139-1

Zobrazit plný text záznamu

[N-(Benzylidene)aniline-N]pentacarbonylchromium(0)

Autor: Karl Heinz Dötz, Patrick Liptau, Martin Nieger

Publikováno v: Acta Crystallographica Section C Crystal Structure Communications. 56:e390-e391

In the title compound, [Cr(C13H11N)(CO)5], the imino ligand displays weak π-acceptor capabilities and, in contrast to Fischer-type carbene complexes, is not positioned on the bisecting line of the angle between two CO ligands.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3d274792251e765c32cd4ae3cd95d46a
https://doi.org/10.1107/s0108270100011070

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání