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The reaction of lithium trialkylalkynylborates. Novel synthetic method of α,β - unsaturated ketones

✍ Scribed by Mikio Naruse; Taku Tomita; Kiitiro Utimoto; Hitosi Nozaki

Book ID
104246710
Publisher
Elsevier Science
Year
1973
Tongue
French
Weight
96 KB
Volume
14
Category
Article
ISSN
0040-4039

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✦ Synopsis

This was evidenced by uv spectra (in EtOH): e, Amax 238 nm (E 2800), cyclopentadiene, A max 238 nm (E 4230). 6 D. Peters, J. Chem. Sot. , 1761 (1959).

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The reaction of trialkylstannylmethyllithium with α,β-epoxy ketones. A preparative method of β, γ-unsaturated ketones by homologation of α, gb-unsaturated ketones
✍ Tadashi Sato; Toshihiro Kikuchi; Norio Sootome; Eigoro Murayama 📂 Article 📅 1985 🏛 Elsevier Science 🌐 French ⚖ 224 KB

a,@-Epoxy ketones 2\_, upon treatment with two equivalents of trialkylstannylmethyllithium 1, afforded cyclopropanols 2 as a single product in acyclic system, and a mixture of cyclopropanols 2 and methylene 1,2-diols 2 in cyclic system. Under acidic conditions, the cyclopropanols gave p,y-unsaturate