What question did this study set out to answer?

This research aims to investigate the one-electron transfer mechanism in the reaction of red phosphorus with phenylthiobenzophenones in superbase systems.

February 28, 2026

One-Electron Transfer in the Reaction of Red Phosphorus with 4-Phenylthiobenzophenones in Superbasic Systems MOH/DMSO

Key Points

This research aims to investigate the one-electron transfer mechanism in the reaction of red phosphorus with phenylthiobenzophenones in superbase systems.
Conducted reactions at 85°C for 1.5–4 hours under argon atmosphere.
Utilized EPR to detect the formation of an anion radical.
Isolated reaction products and identified them using NMR analysis.
Confirmed the formation of an anion radical from the reaction mixture.
Isolated functional diarylmethanols and diarylmethanes with phenylthio groups.
Identified products including bis[phenyl(4-(phenylthio)phenyl)methyl]- and bis[di(4-(phenylthio)phenyl)methyl]potassium phosphates.

Abstract

Red phosphorus reacts with 4-phenylthio- and bis(4-phenylthio)benzophenones in superbase suspensions MOH/DMSO (M = Na, K) under heating (85°C, 1.5–4 h, Ar) according to the one-electron transfer mechanism: the formation of an anion radical of bisphenyl(4-(phenylthio)phenyl)methyl potassium phosphate is detected by EPR. Products of reduction of the initial phenylthiobenzophenones (functional diarylmethanols and diarylmethanes with phenylthio groups) and diphenyl disulfide were isolated from the reaction mixtures, and bisphenyl(4-(phenylthio)phenyl)methyl- and bisdi(4-(phenylthio)phenyl)methylpotassium phosphates were identified (NMR).

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V.A. Kuimov

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One-Electron Transfer in the Reaction of Red Phosphorus with 4-Phenylthiobenzophenones in Superbasic Systems MOH/DMSO

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Abstract

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