Various new I-fluoro-1-alkyl(or aryl)-Z-substituted cyclobutanes were synthesized stereoselectively from I-alkyl(or aryl)cyclopropyl carbine& by the ring expansionfluorination using ('Pr)z-KHFZ-(HP), Py, and 2hydroxymethyl-l-fluorocyclobutanes
β¦ LIBER β¦
Chemoselective synthesis of homoallylic fluorides from cyclopropylmethanols by ring opening
β Scribed by Shigekazu Kanemoto; Makoto Shimizu; Hirosuke Yoshioka
- Book ID
- 104227440
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- French
- Weight
- 225 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Treatment of cyclopropylmethanols with pyridinium poly(hydrogen fluoride) in chlorobenzene-diisopropylamine in the presence of KHF2 gave selectively homoallylic fluorides. Certain synthons containing a fluorine atom at the homoallylic position are of great interest in the light of recent molecule designs,' since there have been a number of bioactive natural products that involve ethylvinyl structure unit(s),
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