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Consecutive β,β'-Selective C(sp3 )-H Silylation of Tertiary Amines with Dihydrosilanes Catalyzed by B(C6 F5 )3.


ABSTRACT: Tris(pentafluorophenyl)borane has been found to catalyze the two-fold C(sp3 )-H silylation of various trialkylamine derivatives with dihydrosilanes, furnishing the corresponding 4-silapiperidines in decent yields. The multi-step reaction cascade involves amine-to-enamine dehydrogenation at two alkyl residues and two electrophilic silylation reactions of those enamines, one inter- and one intramolecular.

SUBMITTER: Fang H 

PROVIDER: S-EPMC8048813 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Consecutive β,β'-Selective C(sp<sup>3</sup> )-H Silylation of Tertiary Amines with Dihydrosilanes Catalyzed by B(C<sub>6</sub> F<sub>5</sub> )<sub>3</sub>.

Fang Huaquan H   Xie Kaixue K   Kemper Sebastian S   Oestreich Martin M  

Angewandte Chemie (International ed. in English) 20210303 15


Tris(pentafluorophenyl)borane has been found to catalyze the two-fold C(sp<sup>3</sup> )-H silylation of various trialkylamine derivatives with dihydrosilanes, furnishing the corresponding 4-silapiperidines in decent yields. The multi-step reaction cascade involves amine-to-enamine dehydrogenation at two alkyl residues and two electrophilic silylation reactions of those enamines, one inter- and one intramolecular. ...[more]

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