Atmosphere-controlled Dual Reactivity of Triarylphosphine in the Photoexcited State: P–C Bond Cleavage vs. Electron Transfer

Atmosphere-controlled Dual Reactivity of Triarylphosphine in the Photoexcited State: P–C Bond Cleavage vs. Electron Transfer

Steady-state photolysis of an acetonitrile solution of triarylphosphine (Ar3P) was carried out using a xenon lamp. The major products resulting from photolysis under deoxygenated conditions and under air were diaryl(cyanomethyl)phosphine Ar2PCH2CN and triarylphosphine oxide Ar3P=O, respectively. Int...

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Veröffentlicht in:Chemistry letters 2013-12, Vol.42 (12), p.1478-1480
Hauptverfasser: Yasui, Shinro, Ogawa, Yuya, Shioji, Kosei, Yamazaki, Shoko
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creator Yasui, Shinro
Ogawa, Yuya
Shioji, Kosei
Yamazaki, Shoko
description Steady-state photolysis of an acetonitrile solution of triarylphosphine (Ar3P) was carried out using a xenon lamp. The major products resulting from photolysis under deoxygenated conditions and under air were diaryl(cyanomethyl)phosphine Ar2PCH2CN and triarylphosphine oxide Ar3P=O, respectively. Intrinsically, Ar3P in the excited state undergoes homolytic cleavage of a P–C bond; however, electron transfer to O2 is predominant under air. Reactivity of Ar3P in the excited state is readily controlled by the choice of atmosphere used in the reaction.
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source Oxford University Press Journals All Titles (1996-Current)
title Atmosphere-controlled Dual Reactivity of Triarylphosphine in the Photoexcited State: P–C Bond Cleavage vs. Electron Transfer
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