Title : Transition metal mediated activation of carbon dioxide
Abstract:
The activation of Carbon Dioxide by transition metals forms the basis of numerous commercially and synthetically important catalytic processes. To understand the mechanistic aspects of these catalytic reactions we have reported earlier the formation of Metallo formates M-OC(O)H] [at the metal centers using CpTaH(CO) and CpNb(H)(CO) via stoichiometric oxidation reactions. In connection with our study of the activation of CO2 molecules and to explore a route to mitigate greenhouse gases (GHG) we reacted CO2 with hydrocarbons such as Tetralin, dihydroanthracene, cyclohexadiene and dihydroanthracene in the presence of various catalysts (MeReO4, NH4ReO4, V2O3, Ru(acac)3 to produce corresponding dehydrogenated products and Formic Acids. We also have conducted studies with various vanadium, Cobalt, and ruthenium oxo complexes to explore the oxidation of alcohols and ethers in the presence of sodium hypochlorite. Catalytic Oxidation of benzyl alcohol demonstrated to produce benzaldehyde. Similar reaction with tetrahydrofuran produced y-butyrolactone.