Planar Chiral, Ferrocene-Stabilized Silicon Cations.
Planar Chiral, Ferrocene-Stabilized Silicon Cations.
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平面手性二茂铁稳定硅阳离子。
DOI:
10.1002/chem.201504777
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
M. Oestreich
中科院分区:
文献类型:
--
作者:
Ruth K. Schmidt;H. Klare;R. Fröhlich;M. Oestreich
The preparation of a series of planar chiral, ferrocenyl-substituted hydrosilanes as precursors of ferrocene-stabilized silicon cations is described. These molecules also feature stereogenicity at the silicon atom. The generation and (29)Si NMR spectroscopic characterization of the corresponding silicon cations is reported, and problems arising from interactions of the electron-deficient silicon atom and adjacent C(sp(3))-H bonds or aromatic π donors are discussed. These issues are overcome by tethering another substituent at the silicon atom to the ferrocene backbone. The resulting annulation also imparts conformational rigidity and steric hindrance in such a way that the central chirality at the silicon atom is set with complete diastereocontrol. These chiral Lewis acid catalysts were then tested in difficult Diels-Alder reactions, but no enantioinduction was seen.
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影响因子:
--
作者:
Kristine Muether;Peter Hrobárik;Veronika Hrobáriková;M. Kaupp;M. Oestreich
通讯作者:
Kristine Muether;Peter Hrobárik;Veronika Hrobáriková;M. Kaupp;M. Oestreich
影响因子:
15
作者:
Ruth K. Schmidt;Kristine Muether;Christian Mück‐Lichtenfeld;S. Grimme;M. Oestreich
通讯作者:
Ruth K. Schmidt;Kristine Muether;Christian Mück‐Lichtenfeld;S. Grimme;M. Oestreich
影响因子:
5.4
作者:
Serdyuk, Olga V.;Zamfir, Alexandru;Tsogoeva, Svetlana B.
通讯作者:
Tsogoeva, Svetlana B.
影响因子:
2.8
作者:
Noedling, Alexander R.;Muether, Kristine;Oestreich, Martin
通讯作者:
Oestreich, Martin