Synthesis of Phosphinoboranes via Coordination-Induced Bromine Abstraction of an Isolable Phosphinyl Radical with Bromoboranes

Abstract

A stable dialkylphosphinyl radical reacted with bromoboranes to afford the corresponding phosphinoboranes accompanied with a bromophosphine under neutral condition at room temperature. The obtained phosphinoboranes have almost planar structures and have an effective P–B dative π-bond. The formation of phosphinoboranes would proceed via coordination-induced bromine abstraction from bromoboranes as a pivotal step, which was supported by the computational study.

Key words

phosphine - borane - radical - halogen abstraction - bond dissociation energy - dative bond - computational study

Publication History

Received: 25 January 2024

Accepted after revision: 15 February 2024

Accepted Manuscript online:
15 February 2024

Article published online:
01 March 2024

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