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[3,3]-Sigmatropic rearrangement of allyl (or propargyl) fluorovinyl ethers. Synthesis of α-trifluoromethyl unsaturated acids and derivatives

✍ Scribed by Frédérique Tellier; Max Audouin; Raymond Sauvêtre


Publisher
Elsevier Science
Year
2001
Tongue
French
Weight
62 KB
Volume
42
Category
Article
ISSN
0040-4039

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A [3.3]Sigmatropic Rearrangement of α,β-
✍ Björn C. Söderberg; Shannon N. O'Neil; Angela C. Chisnell; Jian Liu 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 148 KB

AbstractÐA novel [3.3]sigmatropic rearrangement of in situ formed a,b-unsaturated Fischer acyloxy carbenes forming alkynol esters is described. For example, reaction of tetramethylammonium pentacarbonyl(1-oxo-2-butenyl)chromate(1-) (4) with 4-methoxybenzoyl chloride gave 2-methyl-3-butyn-2-yl 4-meth