Reactions of Alkylidenetriphenylphosphoranes with Sulfur

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概要

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• Reaction of diarylmethylenetriphenylphosphoranes with sulfur gave thiobenzophenones and triphenylphosphine sulfide in good yields. Reaction of benzylidenetriphenylphosphoranes with sulfur gave triphenylphosphine sulfide and 5,7-diphenyl-l,2,3,4,6-pentathiepane. More active alkylidenetriphenylphosphoranes such as isopropylidene- or <I>sec</I>-butylidenetriphenylphosphorane gave the corresponding phosphonium betaine containing sulfur atoms or phosphonium salt produced through air oxidation and hydrolysis of the betaine. α-Benzoylbenzylidenetriphenylphosphorane did not react with sulfur. Reactivity of alkylidenephosphoranes toward sulfur was briefly discussed.

• 公益社団法人 日本化学会の論文

著者

• Tokunaga Hirokazu

  Department of Chemistry, Faculty of Science, The University of Tokyo

関連論文

• Reactions of Thiobenzophenones with Benzenediazonium-o-carboxylate, and Salicyloyl and o-Mercaptobenzoyl Chlorides as 1,4-Dipolar Reagents
• Reactions of Alkylidenetriphenylphosphoranes with Sulfur

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