CuO/SiO2 as a simple, effective and recoverable catalyst for alkylation of indole derivatives with diazo compounds.


The purely inorganic copper oxide on silica catalyzes the reaction of methyl phenyldiazoacetate with N-methyl indole under mild reaction conditions, giving the alkylation (formally a C-H insertion) in position 3, and the catalyst can be recovered and reused at least in 5 consecutive runs with only minor loss in activity. The scope of the reaction includes… (More)
DOI: 10.1039/c3ob40264a


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