4.5 Article

Persistent P-Stabilized Boryl Radicals with Bulky Substituents at Boron

期刊

SYNTHESIS-STUTTGART
卷 50, 期 18, 页码 3671-3678

出版社

GEORG THIEME VERLAG KG
DOI: 10.1055/s-0037-1610151

关键词

radicals; boron; boryl radicals; phosphorus; Gomberg-type dimerization; m-terphenyl; EPR spectroscopy; X-ray diffraction

资金

  1. Centre National de la Recherche Scientifique (CNRS)
  2. Universite Paul Sabatier (UPS)

向作者/读者索取更多资源

Two new P-stabilized boryl radicals [Ph2P(naph)BAr] (Ar = Tip and Ter) have been prepared and characterized by electron paramagnetic resonance spectroscopy. These radicals are persistent for several days in solution at room temperature. The high steric congestion at boron does not prevent radical reactivity. Two different types of dimerization equilibrium have been observed. The structures of the dimers have been unambiguously established by X-ray diffraction crystallography.

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