Synthesis and thermal isomerization of 2, 2, 3, 3-tetrafluoromethylenecyclopropane
WR Dolbier Jr, SF Sellers, BH Al-Sader…
文献索引：Dolbier, William R.; Sellers, Simon F.; Al-Sader, Basil H.; Smart, Bruce E. Journal of the American Chemical Society, 1980 , vol. 102, # 16 p. 5398 - 5399
E,= 38.3 f 0.4 kcdl/mol logA= 13.2 substituents of 1 modestly enhance its rate of rearrangement relative to the parent hydrocarb0n. I Furthermore, the equilibrium thermodynamics (AHo=-1.9 kcal/mol) indicated that cyclopropyl gem-difluoro substituents are more destabilizing than vinylic gem-difluoro substituents on a methylenecyclopropane. We now report the synthesis of the two tetrafluoromethylenecyclopropane isomers 3 and 4 ...
