The Journal of Organic Chemistry

Fluorocyclopropanes. I. Preparation and nuclear magnetic resonance spectra

PB Sargeant

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

Full Text: HTML

Citation Number: 72

Abstract

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 ...

Related Articles:

Fluorinated cyclopropanecarboxylic acids and their derivatives

[Gassen, K. R.; Baasner, B. Journal of Fluorine Chemistry, 1990 , vol. 49, # 1 p. 127 - 139]

Thermal [1, 3] sigmatropic rearrangements of 2, 2-difluoro-1-vinylcyclopropanes

[Dolbier,W.R.; Sellers,S.F. Journal of the American Chemical Society, 1982 , vol. 104, p. 2494]

A new zinc difluorocarbenoid reagent

[Dolbier, William R.; Wojtowicz, Hanna; Burkholder, Conrad R. Journal of Organic Chemistry, 1990 , vol. 55, # 19 p. 5420 - 5422]

Difluorodiazirine. III. Synthesis of Difluorocyclopropanes1

[Mitsch,R.A. Journal of the American Chemical Society, 1965 , vol. 87, p. 758 - 761]

More Articles...