Oxidation of substituted 2-methyl benzoic acids and acrylic acids by S208 - ag(i); their conversion to phthalides and butenolides through rearrangement of acyloxyl radicals. |
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| Authors: | MP Bertrand H Oumar-Mahamat JM Surzur |
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| Institution: | Université Aix-Marseille III - Laboratoire de chimie organique B - Associé au CNRS n° 109 - rue h. Poincaré - 13397 Marseille, Cedex 13 France |
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| Abstract: | Ag (I) mediated persulphate oxidation of various 2-methyl benzoic acids and acrylic acids, co-catalyzed by Cu (II), leads to unsaturated γ-lactones, together with decarboxylation products. Lactonisation proceeds through 1,5 hydrogen transfer from intermediate acyloxyl radicals. |
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