S. Minakata et al., CATALYTIC-OXIDATION OF ALPHA-CARBON OF ETHERS UTILIZING BINUCLEAR COPPER(II) COMPLEX OF 7-AZAINDOLE, Chemistry Letters, (1), 1996, pp. 19-20
Treatment of benzyl ethyl ether with a catalytic amount of binuclear c
opper(II) complex of 7-azaindole 1 under oxygen atmosphere at 80 degre
es C produced ethyl benzoate in 10400% yield based on the catalyst, Th
is reaction could be also applied to other ethers (e.g., alkyl benzyl
ethers and dialkyl ethers) to give alpha-oxygenated products catalytic
ally.