Silylated cyclopentadienes as competent silicon Lewis acid catalysts.
Silylated cyclopentadienes as competent silicon Lewis acid catalysts.
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DOI:
10.1039/c8sc02279h
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发表时间:
2018-08-14
期刊:
影响因子:
8.4
通讯作者:
Lambert TH
中科院分区:
文献类型:
--
作者:
Radtke MA;Lambert TH
Silicon Lewis acid donor catalysts incorporating highly electron-deficient cyclopentadienes are shown to catalyze C–C bond formation via anion abstraction. The synthesis and characterization of silicon Lewis acid complexes that incorporate highly electron-deficient cyclopentadienes is reported. Several pentacarboxycyclopentadienyl and monocarboxytetracyanocyclopentadienyl complexes were prepared. A comparison of their reactivities for catalysis of the allylation of an electron-deficient benzaldehyde was established. The use of a monocarboxytetracyano silylium donor was shown to be effective for the allylation or arylation of a variety of electrophiles via an anion abstraction pathway.
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