was isolated as a byproduct. Formation of cyclic ether derivatives by unusual intramolecular substitution of fluorine is demonstrated for the case of 6a. Several new fluorinated ferrocenes were isolated and analyzed, including 1H, 13C, and 19F nuclear magnetic resonance spectroscopies. Molecular structures of five fluorinated ferrocenophanes by tert-butyl groups were elucidated with X-ray single-crystal
通过1,1'-二
叔丁基二茂铁(1a)和1,1'-双(1-乙基- 1-甲基丙基)
二茂铁(1b)。3,3'-二
锂化物种转化为三- ñ -butyltin衍
生物(图3a和图3b),其平滑地进行
锡-
碘交换反应,得到1,1'-二
碘-3,3'-二-叔-丁基
二茂铁(4a)和1,1'-二
碘-3,3'-双(1-乙基-1-甲基丙基)
二茂铁(4b)。与
三氟乙烯基氯化锌的Negishi型偶联反应可得到高反应性的1,1'-双(
三氟乙烯基)
二茂铁在3,3'-位的叔丁基(5a)或1-乙基-1-甲基丙基(5b)具有优异的收率。图5a和5b通过氧化还原自动催化机理在氧化还原条件下环化成
二茂铁烯。主要产物四碳柄
二茂铁基庚烯由在β位的CF 2部分和一个羰基官能团和在α位的一个C(F)(H)单元(6a和6c)或两个羰基官能团(6b和6d)组成。具有高度
氟化的柄的
二茂铁roc烷,带有七个
氟原子(6e)被分离为副产物。对于6a的情况