A Janus-headed Lewis superacid: simple access to, and first application of Me3Si-F-Al(OR(F))3.
A Janus-headed Lewis superacid: simple access to, and first application of Me3Si-F-Al(OR(F))3.
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Janus-headed Lewis 超强酸:Me3Si-F-Al(OR(F))3 的简单获取和首次应用
DOI:
10.1002/chem.201303671
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
I. Krossing
中科院分区:
文献类型:
--
作者:
M. Rohde;L. O. Müller;D. Himmel;H. Scherer;I. Krossing
Upon reaction of gaseous Me3SiF with the in situ prepared Lewis acid Al(ORF)3, the stable ion‐like silylium compound Me3Si‐F‐Al(ORF)31forms. The Janus‐headed1is a readily available smart Lewis acid that differentiates between hard and soft nucleophiles, but also polymerizes isobutene effectively. Thus, in reactions of1with soft nucleophiles (Nu), such as phosphanes, the silylium side interacts in an orbital‐controlled manner, with formation of [Me3SiNu]+and the weakly coordinating [FAl(ORF)3]–or [(FRO)3Al‐F‐Al(ORF)3]–anions. If exchanged for hard nucleophiles, such as primary alcohols, the aluminum side reacts in a charge‐controlled manner, with release of FSiMe3gas and formation of the adduct R(H)OAl(ORF)3. Compound1very effectively initiates polymerization of 8 to 21 mL of liquid C4H8in 50 mL of CH2Cl2already at temperatures between −57 and −30 °C with initiator loads as low as 10 mg in a few seconds with 100 % yield but broad polydispersities.
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影响因子:
4.3
作者:
Bihlmeier, A;Gonsior, M;Krossing, I
通讯作者:
Krossing, I
DOI:
10.1021/ic00188a028
发表时间:
1984
期刊:
ChemInform
影响因子:
--
作者:
T. Mallouk;G. Rosenthal;G. Mueller;R. Brusasco;N. Bartlett
通讯作者:
N. Bartlett
影响因子:
1.9
作者:
Christe, KO;Dixon, DA;Boatz, JA
通讯作者:
Boatz, JA
影响因子:
15
作者:
B. Rempfer;H. Oberhammer;N. Auner
通讯作者:
N. Auner
DOI:
--
发表时间:
2007
期刊:
影响因子:
--
作者:
Torsten Küppers;E. Bernhardt;R. Eujen;H. Willner;Christian W. Lehmann
通讯作者:
Christian W. Lehmann