A Frustrated Lewis Pair Based on a Cationic Aluminum Complex and Triphenylphosphine
A Frustrated Lewis Pair Based on a Cationic Aluminum Complex and Triphenylphosphine
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基于阳离子铝配合物和三苯基膦的受阻路易斯对
DOI:
10.1021/acs.organomet.5b00927
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发表时间:
2016
期刊:
影响因子:
2.8
通讯作者:
S. Harder
中科院分区:
文献类型:
--
作者:
T. E. Stennett;J. Pahl;H. S. Zijlstra;F. W. Seidel;S. Harder
The highly Lewis acidic, cationic aluminum species [DIPP-nacnacAlMe]+[B(C6F5)4]−(1, DIPP-nacnac = [HC{C(Me)N(2,6-iPr2C6H3)}2]−) has been shown to undergo reactions with a wide variety of small molecules, in both the presence and absence of an external weak phosphine base, PPh3. Cycloaddition reactions of unsaturated C–C bonds across the aluminum diketiminate framework are reported, and the first structural confirmation of this type of cycloaddition product is presented. Addition of PPh3to1produces the cationic aluminum phosphine complex [DIPP-nacnacAl(Me)PPh3]+[B(C6F5)4]−, which undergoes fluxional dissociation/coordination of the phosphine in solution. This weak Al–P interaction can be utilized in frustrated Lewis pair type reactions to activate alkenes, alkynes, CO2, propylene oxide, and the C–Cl bonds of CH2Cl2. The CO2adduct [DIPP-nacnacAl(Me)OC(PPh3)O]+[B(C6F5)4]−undergoes further stoichiometric reduction with Et3SiH to produce an aluminum formate species.
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影响因子:
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作者:
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通讯作者:
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作者:
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