| The oxidative addition of primary alcohols (phenol, tert-butyl alcohol, benzyl alcohol, methanol, 1-octanol) via (PhI 2P2-)AlH (PhI2P = bis(imino)pyridine) was investigated for production of the corresponding aldehyde with elimination of H2. The primary alcohols utilized with beta-hydrogen available (benzyl alcohol, methanol, and 1-octanol) were also investigated for catalytic turnover of H2 and the simultaneous production of its respective aldehyde. Phenol and tert-butyl alcohol reacted with the (PhI2P2-)AlH complex to afford ( PhI2P-)AlH(OC6H5) and (PhI2P-)AlH(OC4H 9), respectively. The reaction of (PhI2P 2-)AlH with benzyl alcohol successfully afforded H2 and benzaldehyde in the presence of excess benzyl alcohol, however no evidence for the reaction was obtained.;The synthesis and characterization of the novel silicon compound [(cat) 2Si(catH)][Et3N] (cat = 3,5-di-tert-butylcatechol) is reported. Its solid state structure revealed a third protonated "cat" ligand bound to the 5th coordination site of the silicon atom. A different catechol ligand, 2,4-di-tert-butyl-6-( tert-butylamino)phenol (apH2), was also synthesized in an effort to metallate with silicon. No silicon complexes were obtained and it can be speculated that since the silicon atom is relatively small, the bulkier ligand framework could not bind to afford a stable 4 or 5- coordinate silicon (IV) species. |
