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Lewis acid-mediated addition of silylated methylenecyclopropane to aldehydes—synthesis of tetrahydrofuran derivatives

✍ Scribed by Lee Patient; Malcolm B Berry; Jeremy D Kilburn

Publisher
Elsevier Science
Year
2003
Tongue
French
Weight
158 KB
Volume
44
Category
Article
ISSN
0040-4039

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Lewis acid-promoted addition of methylen
Lewis acid-promoted addition of methylenecyclopropanes to aldehydes and ketones
✍ Katsukiyo Miura; Mizuki Takasumi; Takeshi Hondo; Hiroshi Saito; Akira Hosomi 📂 Article 📅 1997 🏛 Elsevier Science 🌐 French ⚖ 242 KB

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~