The Cyclohexadienyl-Leaving-Group Approach toward Donor-Stabilized Silylium Ions
The Cyclohexadienyl-Leaving-Group Approach toward Donor-Stabilized Silylium Ions
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环己二烯基离去基团方法获得供体稳定的硅离子
DOI:
10.1021/acs.organomet.5b00609
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发表时间:
2015
期刊:
影响因子:
2.8
通讯作者:
M. Oestreich
中科院分区:
文献类型:
--
作者:
A. Simonneau;T. Biberger;M. Oestreich
The cyclohexa-2,5-dien-1-yl group is established as a leaving group at silicon as an alternative to the Bartlett–Condon–Schneider silicon-to-carbon hydride transfer and the allyl-leaving-group approach to generate silylium ions. Hydride abstraction from the skipped diene unit employing trityl tetrakis(pentafluorophenyl)borate (1, [Ph3C]+[B(C6F5)4]−) yields the silicon cation along with benzene. Our investigations reveal that the presence of an internal or external donor group is mandatory to allow for the formation of intra- or intermolecularly stabilized silylium ions. If not, degradation of the precursor is observed as a result of the reaction of the allylic silane units with the released silylium ion. It is also shown that such allylic silanes do form remarkably stable alkyl-substituted carbenium ions when reacted stoichiometrically with benzene-stabilized silylium ions.
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DOI:
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发表时间:
1967
期刊:
影响因子:
--
作者:
R. Bates;D. W. Gosselink;J. A. Kaczynski
通讯作者:
J. A. Kaczynski
DOI:
10.1002/chin.200144264
发表时间:
2001
期刊:
ChemInform
影响因子:
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作者:
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通讯作者:
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影响因子:
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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
DOI:
10.1002/chin.199545304
发表时间:
1995
期刊:
ChemInform
影响因子:
--
作者:
J. B. Lambert;L. Kania;Shizhong Zhang
通讯作者:
Shizhong Zhang
影响因子:
2.8
作者:
Antoine Simonneau;J. Friebel;M. Oestreich
通讯作者:
M. Oestreich