97355-16-3Relevant academic research and scientific papers
Pincer-Supported Gallium Complexes for the Catalytic Hydroboration of Aldehydes, Ketones and Carbon Dioxide
Liu, Lingyu,Lo, Siu-Kwan,Smith, Cory,Goicoechea, Jose M.
supporting information, p. 17379 - 17385 (2021/11/03)
Gallium hydrides stabilised by primary and secondary amines are scarce due to their propensity to eliminate dihydrogen. Consequently, their reactivity has received limited attention. The synthesis of two novel gallium hydride complexes HGa(THF)[ON(H)O] and H2Ga[μ2-ON(H)O]Ga[ON(H)O] ([ON(H)O]2?=N,N-bis(3,5-di-tert-butyl-2-phenoxy)amine) is described and their reactivity towards aldehydes and ketones is explored. These reactions afford alkoxide-bridged dimers through 1,2-hydrogallation reactions. The gallium hydrides can be regenerated through Ga?O/B?H metathesis from the reaction of such dimers with pinacol borane (HBpin) or 9-borabicyclo[3.3.1]nonane (9-BBN). These observations allowed us to target the catalytic reduction of carbonyl substrates (aldehydes, ketones and carbon dioxide) with low catalyst loadings at room temperature.
Four-electron oxidative formation of aryl diazenes using a tantalum redox-active ligand complex
Zarkesh, Ryan A.,Ziller, Joseph W.,Heyduk, Alan F.
supporting information; body text, p. 4715 - 4718 (2009/02/06)
(Chemical Equation Presented) The active ingredient: The bis(μ-imido) tantalum dimer {[ONOred]Ta(μ-N-p-tolyl)(py)}2 releases the aryl diazene (p-tolyl) N=N (p-tolyl) upon four-electron oxidation with PhICl2 (see scheme; py = pyridine). Studies suggest that the redox-active [ONOred]3- ligands act to collect single-electron oxidation equivalents for the multielectron reaction.
