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, pyr...

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Bibliographic Details
Published in:Organic letters 2016-07, Vol.18 (13), p.3186-3189
Main Authors: Mastalir, Matthias, Stöger, Berthold, Pittenauer, Ernst, Allmaier, Günter, Kirchner, Karl
Format: Article
Language:English
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Summary: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.
ISSN:1523-7060
1523-7052
DOI:10.1021/acs.orglett.6b01398