Nucleophilic Aromatic Substitution at Benzene with Powerful Strontium Hydride and Alkyl Complexes.
Nucleophilic Aromatic Substitution at Benzene with Powerful Strontium Hydride and Alkyl Complexes.
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用强效氢化锶和烷基配合物对苯进行亲核芳香取代
DOI:
10.1002/ange.201901548
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发表时间:
2019
影响因子:
--
通讯作者:
S. Harder
中科院分区:
文献类型:
--
作者:
B. Rösch;T. X. Gentner;H. Elsen;C. A. Fischer;J. Langer;M. Wiesinger;S. Harder
Key to the isolation of the first alkyl strontium complex was the synthesis of a strontium hydride complex that is stable towards ligand exchange reactions. This goal was achieved by using the super bulky β‐diketiminate ligandDIPePBDI (CH[C(Me)N‐DIPeP]2, DIPeP=2,6‐diisopentylphenyl). Reaction ofDIPePBDI‐H with Sr[N(SiMe3)2]2gave (DIPePBDI)SrN(SiMe3)2, which was converted with PhSiH3into [(DIPePBDI)SrH]2. Dissolved in C6D6, the strontium hydride complex is stable up to 70 °C. At 60 °C, H–D isotope exchange gave full conversion into [(DIPePBDI)SrD]2and C6D5H. Since H–D exchange with D2is facile, the strontium hydride complex served as a catalyst for the deuteration of C6H6by D2. Reaction of [(DIPePBDI)SrH]2with ethylene gave [(DIPePBDI)SrEt]2. The high reactivity of this alkyl strontium complex is demonstrated by facile ethylene polymerization and nucleophilic aromatic substitution with C6D6, giving alkylated aromatic products and [(DIPePBDI)SrD]2.
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DOI:
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发表时间:
2011
期刊:
影响因子:
--
作者:
Phillip Jochmann;Stefanie Maslek;T. Spaniol;J. Okuda
通讯作者:
J. Okuda
影响因子:
16.6
作者:
Causero, Andrea;Elsen, Holger;Harder, Sjoerd
通讯作者:
Harder, Sjoerd
影响因子:
16.6
作者:
Fischer, R;Gärtner, M;Westerhausen, M
通讯作者:
Westerhausen, M
DOI:
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发表时间:
1991
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作者:
F. Cloke;P. Hitchcock;M. Lappert;G. A. Lawless;B. Royo
通讯作者:
B. Royo
DOI:
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发表时间:
--
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作者:
E. Frankland
通讯作者:
E. Frankland