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Ruthenium‐Catalyzed Dimethylamineborane Dehydrogenation: Stepwise Metal‐Centered Dehydrocyclization

2009; Wiley; Volume: 15; Issue: 40 Linguagem: Inglês

10.1002/chem.200901372

1521-3765

Anja Friedrich, Markus Drees, Sven Schneider,

Organoboron and organosilicon chemistry

Amine–borane dehydrogenation: Ruthenium PNP amido pincer complex I catalyzes the dehydrocoupling of dimethylamineborane to cyclic dimer (Me2NBH2)2. The results are in agreement with a mechanism including initial alternative dehydrogenation to aminoborane Me2NBH2 versus metal-centered BN coupling via diborazane Me2HNH2BMe2NBH3. Formation of borametallacycle II, which features a rare four-membered Ru–N–B–H ring, results in considerable slowdown of the catalytic activity. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.