Further Structural Modification of Sulfur-Stabilized Silicon Cations with Binaphthyl Backbones

Further Structural Modification of Sulfur-Stabilized Silicon Cations with Binaphthyl Backbones
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联萘主链硫稳定硅阳离子的进一步结构改性

DOI:
10.1055/s-0037-1610697
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发表时间:
2019
期刊:
Synthesis
影响因子:
--
通讯作者:
M. Oestreich
M. Oestreich
中科院分区:
--
文献类型:
--
作者:
P. Shaykhutdinova;M. Oestreich

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相似文献

描述了两种具有手性 4,4'-二取代联萘 silepine 主链的新型阳离子硅硫路易斯对的合成和光谱表征。两种路易斯酸在环己-1,3-二烯和查尔酮的狄尔斯-阿尔德反应模型中均诱导显着的对映选择性,但与之前报道的路易斯酸相比,联萘主链的额外取代对对映诱导的影响最小。另一种具有手性螺环主链的硅阳离子在相同范围内具有对映选择性,但其合成很费力。
The synthesis and spectroscopic characterization of two novel cationic silicon–sulfur Lewis pairs with a chiral 4,4′-disubstituted binaphthyl silepine backbone are described. Both Lewis acids induce significant enantioselectivity in the model Diels–Alder reaction of cyclohexa-1,3-diene and chalcone but additional substitution of the binaphthyl backbone exerts a minimal effect on enantioinduction compared to previously reported Lewis acids. Another silicon cation with a chiral spirocyclic backbone induces enantioselectivity in the same range but its synthesis is laborious.
平面手性二茂铁稳定硅阳离子。
DOI: 10.1002/chem.201504777
发表时间: 2016
期刊: Chemistry
影响因子: --
作者:
Ruth K. Schmidt;H. Klare;R. Fröhlich;M. Oestreich
通讯作者: M. Oestreich
DOI: 10.1021/ja981021k
发表时间: 1998-08-05
影响因子: 15
作者:
Johannsen, M;Jorgensen, KA;Helmchen, G
通讯作者: Helmchen, G