TY - JOUR AU - Rosenthal, Amos J.; Mallet-Ladeira, Sonia; Bouhadir, Ghenwa; Bourissou, Didier TI - Persistent P-Stabilized Boryl Radicals with Bulky Substituents at Boron SN - 0039-7881 SN - 1437-210X PY - 2018 JO - Synthesis JF - Synthesis LA - EN VL - 50 IS - 18 SP - 3671 EP - 3678 ET - 2018/06/19 DA - 2018/09/04 KW - radicals KW - boron KW - boryl radicals KW - phosphorus KW - Gomberg-type dimerization KW - m-terphenyl KW - EPR spectroscopy KW - X-ray diffraction AB - 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. PB - © Georg Thieme Verlag DO - 10.1055/s-0037-1610151 UR - http://www.thieme-connect.com/products/ejournals/abstract/10.1055/s-0037-1610151 ER -