We developed the aerobic photooxidative cleavage of carbon-carbon triple bonds to carboxylic acids in the presence of catalytic amounts of carbon tetrabromide under photoirradiation with a high-pressure mercury lamp.
Oxidation O 0212Aerobic Photooxidative Cleavage of the C-C Double Bonds of Styrenes.αor β-Substituted styrenes, which show low reactivity under previoulsy reported cleavage conditions, are converted into the corresponding benzoic acids and ketenes using carbon tetrabromide as catalyst under aerobic photo-irradiation conditions. -(HIRASHIMA, S.-I.; KUDO, Y.; NOBUTA, T.; TADA, N.; ITOH*, A.; Tetrahedron Lett. 50 (2009) 30, 4328-4330; Gifu Pharm. Univ., Mitahora, Gifu 502, Japan; Eng.) -Mais 45-033
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