Tetrahedron Letters p. 3071 - 3074 (2016)
Update date:2022-08-02
Topics:
Adib, Mehdi
Pashazadeh, Rahim
Rajai-Daryasarei, Saideh
Mirzaei, Peiman
Jamal Addin Gohari, Seyed
A novel, efficient, and metal-free dual C–O bond formation reaction for the synthesis of carboxylic anhydrides from aryl aldehydes via cross-dehydrogenative coupling is described. Heating a mixture of aromatic aldehydes and an aqueous solution of tert-butyl hydroperoxide as oxidant in the presence of catalytic nBu4PBr in chlorobenzene at 80?°C for 3?h afforded the corresponding carboxylic anhydrides in good to excellent yields.
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