ChemCatChem p. 3413 - 3422 (2019)
Update date:2022-08-10
Topics:
Moharreri, Ehsan
Biswas, Sourav
Deljoo, Bahareh
Kriz, David
Lim, Seyoung
Elliott, Sarah
Dissanayake, Shanka
Dabaghian, Marina
Aindow, Mark
Suib, Steven L.
Aerobic self-esterification of primary alcohols catalyzed by mesoporous metal oxides (manganese and cobalt oxides) is reported under base and solvent free conditions. For a range of aliphatic alcohols, up to 90 % conversions to esters was achieved. The catalytic reaction is likewise applicable to neat aldehydes as substrates with yields of up to 86 %. High pressure batch reaction for ethanol to ethyl acetate led to 22 % yield. Isotope labeling studies indicated decarboxylation on the catalyst surface. Mechanistic and kinetic experiments implicate oxygen rebound and α-carbon removal as intermediate steps. Mesoporous cobalt oxide showed about 20 % higher catalytic activity compared to mesoporous manganese oxide.
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