The Journal of Organic Chemistry

Fluorocyclopropanes. I. Preparation and nuclear magnetic resonance spectra

PB Sargeant

文献索引：Sargeant,P.B. Journal of Organic Chemistry, 1970 , vol. 35, p. 678 - 682

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被引用次数: 72

摘要

Hexafluoropropylene epoxide transfers a difluoromethylene group to olefins in a general and convenient synthesis of fluorinated cyclopropanes. However, loss of stereospecificity can result from thermal isomerization of the fluorinated cyclopropane, which occurs slowly near 200". The nmr spectra of the fluorinated cyclopropanes show that generally the vicinal coupling constants cis JEF (9-17 Hz) and cis JFF (5-10 Hz) are greater than trans JHF (1-2 ...