Lewis acid-catalyzed cascade reactions of arylmethylenecyclopropanes with 1,1,3-triarylprop-2-yn-1-ols or their methyl ethers |
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| Authors: | Yao Liang-Feng Shi Min |
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| Institution: | School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Mei Long Lu, Shanghai 200237, China. |
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| Abstract: | Arylmethylenecyclopropanes 1 can react with 3-methoxy-1,3,3-triarylprop-1-yne 2 or 1,1,3-triarylprop-2-yn-1-ol 2-OH to give the corresponding functionalized methylenecyclobutene, cyclobutane, and cyclopropane derivatives in the presence of Lewis acid BF3.OEt2 under mild conditions. A plausible Meyer-Schuster rearrangement mechanism has been proposed. |
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