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Lewis acid-catalyzed reactions of dialkyl 2-arylcyclopropane-1,1-dicarboxylates with 2,5-dimethylfuran were found to give products of [3+2]-cycloaddition to C(2)–C(3) bond, which contain reactive vinyl ether moiety. These adducts can be further transformed into various products depending on the Lewis acid, the nucleophilicity of aryl group in starting cyclopropane and the ratio of reagents. The vinyl...
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