Rettig, Irving D.; Van, Jackson; Brauer, Jacob B.; Luo, Wentai; McCormick, Theresa M. published the artcile< Tellurorhodamine photocatalyzed aerobic oxidation of organo-silanes and phosphines by visible-light>, HPLC of Formula: 576-83-0, the main research area is tellurorhodamine preparation photocatalyst aerobic oxidation organo silane phosphine visible; mesityl bisdimethylamino telluroxanthylium hexafluorophosphate preparation photocatalyst aerobic oxidation kinetics.
Tellurorhodamine, 9-mesityl-3,6-bis(dimethylamino)telluroxanthylium hexafluorophosphate (1), photocatalytically oxidizes aromatic and aliphatic silanes and tri-Ph phosphine under mild aerobic conditions. Under irradiation with visible light, 1 can react with self-sensitized 1O2 to generate the active telluroxide oxidant (2). Silanes are oxidized to silanols and tri-Ph phosphine is oxidized to tri-Ph phoshine oxide either using 2, or 1 with aerobic irradiation Kinetic experiments coupled with a computational study elucidate possible mechanisms of oxidation for both silane and phosphine substrates. First-order rates were observed in the oxidation of tri-Ph phosphine and methyldiphenyl silane, indicating a substitution like mechanism for substrate binding to the oxidized tellurium(IV). Addnl., these reactions exhibited a rate-dependence on water. Oxidations were typically run in 50 : 50 water/methanol, however, the absence of water decreased the rates of silane oxidation to a greater degree than tri-Ph phosphine oxidation Parallel results were observed in solvent kinetic isotope experiments using D2O in the solvent mixture The rates of oxidation were slowed to a greater degree in silane oxidation by 2 (kH/kD = 17.30) than for phosphine (kH/kD = 6.20). Various silanes and tri-Ph phosphine were photocatalytically oxidized with 1 (5%) under irradiation with warm white LEDs using atm. oxygen as the terminal oxidant.
Dalton Transactions published new progress about Oxidation kinetics. 576-83-0 belongs to class bromides-buliding-blocks, and the molecular formula is C9H11Br, HPLC of Formula: 576-83-0.
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary