作者:William R. Dolbier、Karl S. Medinger
DOI:10.1016/0040-4020(82)87019-1
日期:1982.1
Cope rearrangements of 7,7,7-trifluoro-1,5-heptadiene and 7,7-difluoro-1,5-heptadiene were examined to gain quantitative understanding of the thermodynamic effect of allylic fluorine substitution. Group value contributions to ΔHf's were thus able to be determined for allylic fluorine-substituted carbon groups: C(F)3(Cd) = −166.0, C(F)2(H)(Cd)= −107.6 and C(F)(H)2(Cd) = −52.2 kcal/mole.
检查了7,7,7-三氟-1,5-庚二烯和7,7-二氟-1,5-庚二烯的对应重排,以定量了解烯丙基氟取代的热力学效应。到ΔH组值的贡献˚F的,从而能够同时被确定为烯丙基氟取代的碳基团:C(F)3(C d)= -166.0,C(F)2(H)(C d)= -107.6和C(F)(H)2(C d)= -52.2 kcal /摩尔。