Synthesis, variable temperature NMR investigations and solid state characterization of novel octafluorofluorene compounds
作者:Fabio Marchetti、Fabio Marchetti、Francesco Masi、Guido Pampaloni、Vincenzo Passarelli、Anna Sommazzi、Silvia Spera
DOI:10.1016/j.jfluchem.2008.12.011
日期:2009.3
number of new 9-substituted octafluorofluorene derivatives, solution NMR studies, and the first examples of solid state structures of octafluorofluorenes [1,2,3,4,5,6,7,8-octafluorofluorene, C13H2F8, 1; 1,2,3,4,5,6,7,8-octafluoro-9-(pentafluoro)phenylfluorene, C19HF13, 8; 1,1′,2,2′,3,3′,4,4′,5,5′,6,6′,7,7′,8,8′-hexadecafluoro-9,9′-bifluorenyl, C26H2F16, 11] are reported. Variable temperature 19F NMR investigations
制备许多新的9-取代的八氟芴衍生物,溶液NMR研究以及八氟芴[1,2,3,4,5,6,7,8-八氟芴,C 13 H 2的固态结构的第一个实例˚F 8,1 ; 1,2,3,4,5,6,7,8-八氟-9-(五氟)苯基芴,C 19 HF 13,8 ; 1,1',2,2',3,3',4,4',5,5',6,6',7,7',8,8'-十六氟-9,9'-联芴基,C 26 ħ 2 ˚F 16,11 ]报道。可变温度19已对9-芳基取代的化合物1,2,3,4,5,6,7,8-八氟-9-(五氟)苯基-9-羟基芴,C 19 HF 13 O,4,进行了F NMR研究。 1,2,3,4,5,6,7,8-八氟-9-(九氟-4'-联苯甲酰基)-9-羟基芴,C 25 HF 17 O,5和8以及旋转的高能垒已经确定了芳基的基团。较低的旋转势垒是观察化合物4相对于化合物8,而5不显示下面338 K. fluxional行为温度实验上执行的可变的结果8