Two-Way Street Transformation of Boronium and Borane Complexes Facilitated by Amino-Linked N-Heterocyclic Carbene

Two-Way Street Transformation of Boronium and Borane Complexes Facilitated by Amino-Linked N-Heterocyclic Carbene

We have obtained boronium complexes upon reaction of an amino-NHC lithium bromide adduct with borane. Unexpectedly, the treatment of the boronium complexes with silver triflate led to the isolation of a bis-borane compound containing two chemically different boron centers. The bis-borane and boroniu...

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Bibliographic Details
Published in:Organometallics Vol. 29; no. 18; pp. 4004 - 4006
Main Authors: Tsai, Jie-Hong, Lin, Shen-Ta, Yang, Richard Bing-Gong, Yap, Glenn P. A, Ong, Tiow-Gan
Format: Journal Article
Language:English
Published: American Chemical Society 27-09-2010
Online Access:Get full text
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Summary:We have obtained boronium complexes upon reaction of an amino-NHC lithium bromide adduct with borane. Unexpectedly, the treatment of the boronium complexes with silver triflate led to the isolation of a bis-borane compound containing two chemically different boron centers. The bis-borane and boronium complexes can interconvert via a four-membered intermediate metallacycle consisting of a three-center, two-electron B−H−B bonding motif assisted by the pendant amine arm.
ISSN:0276-7333
1520-6041
DOI:10.1021/om100747j