Lewis acid-promoted addition of methylen
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Katsukiyo Miura; Mizuki Takasumi; Takeshi Hondo; Hiroshi Saito; Akira Hosomi
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Article
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1997
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Elsevier Science
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French
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In the presence of TiCi4, me~ylenecyclopropane (la) easily reacted with Jdln~u~tlc aldehydes to give the p-(chiorome~yl)allylate~ products 2 in good yields along with a small amount of the methylenetetrahydrofurans 3. The reacti~ with chiral a-and ~-alkoxy aldehydes lwoceeded with high levels of cl~