Manganese(III) acetate mediated synthesis of 3-trifluoroacetyl-4,5-dihydrofurans and 3-(dihydrofuran-2(3H)-ylidene)-1,1,1-trifluoroacetones by free radical cyclization. Part 1 |
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| Authors: | Mehmet Y?lmaz A. Tar?k Pekel |
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| Affiliation: | Ankara University, Science Faculty, Department of Chemistry, Tandogan, 06100 Ankara, Turkey |
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| Abstract: | 2-Trifluoroacetyl-4,5-dihydrofurans were obtained by manganese(III) acetate mediated radical cyclization of trifluoromethyl-1,3-dicarbonyl compounds (1a-c) with conjugated alkenes (2a-h). The reaction of 1,1,1-trifluoropentane-2,4-dione (1a) with propenylbenzene and 1,1-diphenyl-1-butene surprisingly yielded 3-(dihydrofuran-2(3H)-ylidene)-1,1,1-trifluoroacetones besides 3-trifluoroacetyl-4,5-dihydrofurans. |
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| Keywords: | Manganese(III) acetate 3-Trifluoroacetyl-4,5-dihydrofuran Radical cyclization Trifluoromethyl-1,3-dicarbonyl Oxidative addition |
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