KOtBu-Catalyzed 1,2-Silaboration of N-Heteroarenes to Access 2-Silyiheterocycles: A Cooperative Model for the Regioselectivity

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Reductive functionalization of N-heteroarenes offers a route to highly versatile heterocyclic synthons bearing multiple transformable groups. We present herein the development of KOtBu-catalyzed 1,2-silaboration of a broad range of N-heteroarenes, affording heterocyclic allylamines or enamines with the formation of a sp(3) C2-Si bond. These labile compounds were isolated either as their N-acyl derivatives or as rearomatized 2-silyl-N-heteroarenes by the one-pot procedures. A model of the six-membered ion-pair complex was proposed to rationalize the observed 1,2-regioselectivity, wherein KOtBu catalyst plays an associative role in activating the substrate and silylborane reagent.
Publisher
AMER CHEMICAL SOC
Issue Date
2022-05
Language
English
Article Type
Article
Citation

ACS CATALYSIS, v.12, no.9, pp.4898 - 4905

ISSN
2155-5435
DOI
10.1021/acscatal.2c01126
URI
http://hdl.handle.net/10203/297286
Appears in Collection
CH-Journal Papers(저널논문)
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