Abstract
AbstractMonovalent group 13 diyls are promising reagents for C−X bond activation. We here report on C−Br bond activation reactions of gallanediyl LGa (L=HC[C(Me)NAr)]2, Ar=2,6‐i‐Pr2C6H3)) with a variety of bromoalkanes. Reactions with alkylbromides R−Br gave the corresponding LGa(Br)R (R=Et 1, n‐Pr 2, i‐Pr 3), while the reaction with dibromomethane in 2 : 1 molar ratio occurred with geminal C−Br bond addition and formation of [LGa(Br)]2CH2 (4). In contrast, equimolar reaction of LGa with CHBr3 yielded LGa(Br)CHBr2 (5), which reacted with another equiv. of LGa with decomposition and formation of LGaBr2. Compounds 1–5 were characterized by heteronuclear (1H, 13C) NMR and IR spectroscopy, as well as single‐crystal X‐ray diffraction (sc‐XRD).
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