Novel strategy for the synthesis of chiral pseudo-ortho-substituted hydroxy[2.2]paracyclophane-based ligands from the resolved 4-bromo-12-hydroxy[2.2]paracyclophane as a parent compound

Autor: Evgenii V. Vorontsov, Zoya A. Starikova, Valeria I. Rozenberg, R. P. Zhuravsky

Publikováno v: Tetrahedron: Asymmetry. 19:216-222

A simple and efficient resolution of racemic 4-bromo-12-hydroxy[2.2]paracyclophane into its enantiomers via diastereomeric esters with (1S)-(−)-camphanic acid was carried out. New synthetic routes to enantiomerically pure 4,12-dihydroxy- and 4-hydr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa8c47c3877ef27980680fda219ad310
https://doi.org/10.1016/j.tetasy.2007.12.010

The first regioselective double electrophilic substitution of the C2-symmetric pseudo-meta-disubstituted [2.2]paracyclophanes

Autor: N. V. Vorontsova, Evgenii V. Vorontsov, Valeria I. Rozenberg, Elena V. Sergeeva

Publikováno v: Tetrahedron Letters. 47:2357-2360

We report here the first examples of the regioselective double electrophilic substitution of chiral C 2 -symmetric pseudo-meta -disubstituted [2.2]paracyclophanes. Thus, the double acylation of 4,15-dihydroxy[2.2]paracyclophane occurs ortho -regiosel

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https://doi.org/10.1016/j.tetlet.2006.02.003

Abnormal cyclopalladation of Schiff bases made of metallocenyl aldehydes and α-ferrocenylethylamine: Unexpected formation of the heteroannular 3-atomic bridge

Autor: Viatcheslav I. Sokolov, Zoya A. Starikova, Tatiana V. Demeshchik, Evgenii V. Vorontsov, S. T. Ovseenko, L. L. Troitskaya

Publikováno v: Journal of Organometallic Chemistry. 690:3976-3982

Cyclopalladation of the Schiff bases of general formula McCH N–CH(Me)Fc (Mc Fc, Ru) (1a,b) with a chiral centre leads to the mixtures of three products, two of which (2 and 3) are planar chiral diastereomers formed from homoannular substitution int

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https://doi.org/10.1016/j.jorganchem.2005.05.035

Stable Agostic (C−H···M) closo-Irida- and closo-Rhodacarboranes with σ,η2-Cyclooctenyl Ligands. Crystal and Molecular Structure of closo-3,3-(σ,η2-C8H13)-1,2-μ-(ortho-xylylene)-3,1,2-IrC2B9H9

Autor: Igor T. Chizhevsky, Oleg L. Tok, Evgenii V. Vorontsov, Fedor M. Dolgushin, T. V. Zinevich, Alexander V. Safronov

Publikováno v: Organometallics. 23:4970-4979

Agostic (C−H···M) complexes [closo-3,3-(σ,η2-C8H13)-1,2-μ-(ortho-xylylene)-3,1,2-IrC2B9H9] (5) and [closo-3,3-(σ,η2-C8H13)-1,2-μ-(ortho-xylylene)-3,1,2-RhC2B9H9] (9), stable in the solid state, have been prepared via the reaction of [M(η4

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https://doi.org/10.1021/om049715r

Kinetics and Mechanism of the Proton Transfer to Cp*Fe(dppe)H: Absence of a Direct Protonation at the Metal Site

Autor: Lina M. Epstein, Vladimir I. Bakhmutov, Natalia V. Belkova, Pavel O. Revin, Rinaldo Poli, Elena S. Shubina, Edmond Collange, Evgenii V. Vorontsov

Publikováno v: Journal of the American Chemical Society
Journal of the American Chemical Society, American Chemical Society, 2003, 125 (36), pp.11106-11115. ⟨10.1021/ja0358450⟩

International audience; The reaction between Cp*Fe(dppe)H and a number of different proton donors (2-fluoroethanol, MFE; 2,2,2-trifluoroethanol, TFE; hexafluoro-2-propanol, HFIP; perfluoro-tert-butyl alcohol, PFTB; and trifluoroacetic acid, TFA) has

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https://doi.org/10.1021/ja0358450