作者:Yigang He、Christopher P. Junk、John J. Cawley、David M. Lemal
DOI:10.1021/ja030077y
日期:2003.5.1
To explore the effects of fluorine substitution on the highly strained [2.2.2]propellane skeleton, a new representative of this ring system, perfluorotricyclo[2.2.2.01,4]octan-2-one ethylene ketal, was prepared by a rapid and quantitative [2+2] cycloaddition to the strained alkene perfluorobicyclo[2.2.0]hex-1(4)-ene. The propellane displays impressive thermal stability, and the vulnerable C-C bond
为了探索氟取代对高应变 [2.2.2] 丙烷骨架的影响,该环系统的新代表全氟三环 [2.2.2.01,4]octan-2-one 乙烯缩酮通过快速定量制备[2+2] 环加成到应变烯烃全氟双环 [2.2.0] hex-1(4)-ene。推进器显示出令人印象深刻的热稳定性,连接桥头的脆弱 CC 键对亲电子试剂的攻击具有很强的抵抗力。另一方面,这种缺电子键在室温下会被各种亲核试剂和温和的还原剂迅速裂解。这种化合物的行为与唯一已知的没有氟取代基的 [2.2.2] 丙烷形成鲜明对比。