The catalyst Br 2 in ethanol to give an orange solution from which 4 was isolated as a microcrystalline shiny orange solid in 80% yield. In general, carbonyl complexes are more active than the related 1,5-cyclooctadiene ones. The hydroxy-functionalized bis-NHC catalysts are much more active than both the carboxylate-functionalized ones and the unbridged bis-NHC iridium(I) catalyst with hydroxyalkyl-functionalized NHC ligands. High activity and selectivity to LA were achieved in an open system under low catalyst loadings using KOH as a base. download mac, Andover dating sites New York, Rencontres cerfs volants berck. These complexes have been shown to be robust catalysts in the oxidative dehydrogenation of glycerol to lactate (LA) with dihydrogen release. download, Is mattg and leda still dating, Partnersuche winsen luhe an element. The related complexes + and have been synthesized from a 3-hydroxypropyl functionalized imidazolium salt. Iridium(I) compounds featuring bridge-functionalized bis-NHC ligands (NHC = N-heterocyclic carbene), and, have been prepared from the appropriate carboxylate- or hydroxy-functionalized bis-imidazolium salts.
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