Synthesis 1998; 1998(2): 175-180
DOI: 10.1055/s-1998-2010
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Organophosphorus Compounds; 122. Alkylation of 1H-Phosphirenes with Triflates - Synthesis of λ 5 σ 4-1H-Phosphirenium Cations

Heinrich Heydt* , Jürgen Hoffmann, Andreas Göller, Timothy Clark, Manfred Regitz
  • *Fachbereich Chemie der Universität Kaiserslautern, Erwin-Schrödinger-Str., D-67663 Kaiserslautern, Germany; Fax + 49(6 31)2 05 39 21; E-mail:;
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31. Dezember 2000 (online)

The 1H-phosphirenes 9 a - g were alkylated by the trifluoromethanesulfonate esters 10 a,b to furnish the stable phosphirenium salts 11 a - i. The phosphirenium salts 14 bearing two identical exocyclic substituents at phosphorus were obtained by reactions of the silyl-substituted 1H-phosphirene 12 with a twofold molar amount of the esters 10 a,b. As examples for the reactivity, the salts 11 b,d were subjected to hydrolysis (→ 15 a,b) and 11 c to methanolysis (→ 16).