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By catalyst and condition screening, a simple method for the synthesis of benzazole and quinoxaline heterocycles via Cu-catalyzed direct aerobic oxidative cyclocondensation of o-thio/hydroxy/aminoanilines and amines was developed by using air as the safe, cheap, effective, and clean oxidant. Due to the observed great promoting effect of the substrates on the reaction, single CuI can be used as the...
The functionalized Poly(ethylene glycol) (PEG)-stabilized Pd(0) nanoparticles have been utilized to selectively oxidize alcohols to the corresponding aldehydes or ketones in supercritical carbon dioxide (scCO2)/PEG (PEG-2000) biphasic system. It was demonstrated that the Pd(0) nanocatalyst was more active and selective, in comparison with the commercially available Pd/C catalyst, PVP-stabilized Pd...
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