Air-Stable Triazine-Based Ni(II) PNP Pincer Complexes As Catalysts for the Suzuki–Miyaura Cross-Coupling

Air-stable, thermally robust, and
well-defined cationic Ni­(II)
PNP pincer complexes based on the 2,4-diaminotriazine scaffold are
described. These complexes are active catalysts for the Suzuki–Miyaura
cross-coupling of a wide range of aryl, heteroaryl (including benzoxazole,
thiazole, pyridine, pyrimidine, thiazole), primary and secondary alkyl
halides, and pseudohalides with different organoboronate reagents
giving excellent to good isolated yields. Neutral deprotonated complexes
seem to play a key role in the catalytic process.