Carbon, an abundant,
inexpensive, and nonmetallic material, is
an inimitable support in heterogeneous catalysis, and variable carbonaceous
materials have been utilized to support metal nanoparticle catalysts.
We developed an efficient and stable heterogeneous catalyst with highly
dispersed metallic palladium nanoparticles embedded in an ordered
pore channel of mesoporous carbon and first applied the catalyst to
construct imides from amides using aryl esters as an acylation reagent
via C–O activation. The catalyst represents excellent catalytic
performance and could be reused and recycled five times without any
significant decrease in activity. The heterogeneous nature of metallic
state palladium was proven to be the active center in the acylation
reaction.
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