SCHEDULED MAINTENANCE
Insertion reactions of the C–B–N-substituted borinium cation [MesBNiPr2]+†
Karlee L.
Bamford 
a
and
Douglas W.
Stephan
*a
a
and
Douglas W.
Stephan
*a
Abstract
The synthesis and isolation of the first stable C–B–N-substituted borinium [MesBNiPr2][B(C6F5)4] (2) is described. Compound 2 was shown to react with isothiocyanate and carbodiimides, effecting B–C insertion to afford nitrilium (4) and borenium amidinate salts, respectively. The borinium cation [MesBNiPr2]+ (2+) was also generated from reactions of MesB(Cl)NiPr2 (1) and GaCl3, and used to prepare stable borenium amidinate salts (5–6), while the triflate borane MesB(OTf)NiPr2 (7) reacts with carbodiimide to give the bis(amidinate) boronium salt [MesC(NiPr)2B((NiPr)2C)NiPr2][OTf] (8).
![Graphical abstract: Insertion reactions of the C–B–N-substituted borinium cation [MesBNiPr2]+](/en/Image/Get?imageInfo.ImageType=GA&imageInfo.ImageIdentifier.ManuscriptID=D0DT03665J&imageInfo.ImageIdentifier.Year=2020)
- This article is part of the themed collection: Celebrating our Golden Authors
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