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The 1,1-Carboboration of Bis(alkynyl)phosphines as a Route to Phosphole Compounds

Juri Möbus, Quentin Bonnin, Kirika Ueda, Roland Fröhlich, Kenichiro Itami, Gerald Kehr, and Gerhard Erker

Angew. Chem. Int. Ed. Early View. DOI: 10.1002/anie.201107398

 

B(C6F5)3 efficiently con- verts a series of bis(alkynyl)phosphines into highly substituted 3-borylphospholes through a twofold 1,1-carboboration reaction sequence. The boron substituted phospholes were also used as substrates in Suzuki–Miyaura type cross-coupling reactions (see scheme).

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