## Abstract The α,β‐unsaturated thiolesters listed in Table I have been prepared by treating a mixture of a carbonyl compound and boron trifluoride with an acetylenic thioether (see reaction scheme 2). Good yields are obtained when ethers are used as solvents. The configuration of the esters prepar
✦ LIBER ✦
Improved highly efficient synthesis of α,β-acetylenic ketones. Nature of the intermediate from the reaction of lithium acetylide with boron trifluoride etherate
✍ Scribed by Herbert C. Brown; Uday S. Racherla; Shankar M. Singh; Richard B. Wetherill
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- French
- Weight
- 249 KB
- Volume
- 25
- Category
- Article
- ISSN
- 0040-4039
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An Efficient Stereocontrolled Strategy in the Cyclopropanation Reactions of α,β-Unsaturated Ketones with Semistabilized Ylides: Highly Selective Synthesis of Two Geometrical Isomers of Vinyl-Substituted Cyclopropane Derivatives. -Starting from telluronium ylides cis,trans-substituted cyclopropyl ke