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Synlett 2000; 2000(11): 1685-1687
DOI: 10.1055/s-2000-7912
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A One-Pot Synthesis of 1-Substituted Cyclic Phosphine Sulfides by Simultaneous Addition of Bis- and Mono-Grignard Reagents to a New Efficient Phosphorus Donating Reagent

Graziano Baccolini* , Carla Boga, Umberto Negri
  • *Dipartimento di Chimica Organica, Università, Viale Risorgimento 4, I-40136 Bologna, Italy; Fax +39 51-2 09 36 54; E-mail: baccolin@ms.fci.unibo.it
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Publication Date:
31 December 2000 (online)

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The synthesis of the reported cyclic phosphine sulfides (4, 5, 6) is carried out in good yields in a one-pot reaction with simultaneous addition of the three reagents (1, BrMgCh2(CH2)nCH2MgBr, RMgBr) and final treatment with sulfur. The new phosphorus donating reagent benzothiadiphosphole 1 is an inexpensive, facile to prepare, and air-insensitive solid.

phosphorus - heterocycles - Grignard reactions - cyclization - cyclic phosphine sulfide