Chemo-, regio-, and stereo-selective perfluoroalkylations by a Grignard complex with zirconocene
作者:Motohiro Fujiu、Kazuyuki Negishi、Jie Guang、Paul G. Williard、Shigeki Kuroki、Koichi Mikami
DOI:10.1039/c5dt03039k
日期:——
The synthesis of highly reactive perfluoroalkyl Grignard reagents with early transition metal zirconocene complexes and their new types of highly chemo-, regio-, and stereo-selective perfluoroalkylation reactions are reported with epoxides in particular. The zirconocene complex is advantageous in activating the perfluoroalkyl Grignard species. The zirconocene·Grignard complexes were clarified by DOSY
Paradigm Shift from Alkaline (Earth) Metals to Early Transition Metals in Fluoroorganometal Chemistry: Perfluoroalkyl Titanocene(III) Reagents Prepared via Not Titanocene(II) but Titanocene(III) Species
Perfluoroalkyl (RF) titanocene reagents [Cp2TiIIIRF] synthesized via [Cp2TiIIICl] rather than [Cp2TiII] show new types of perfluoroalkylation reactions. The [Cp2TiIIIRF] reagents exhibit a wide variety of reactivity with carbonyl compounds including esters and nitriles, and selectivities far higher than those reported for conventional RFLi and RFMgX reagents.
通过[Cp 2 Ti III Cl]而不是[Cp 2 Ti II ]合成的全氟烷基(R F)钛茂试剂[Cp 2 Ti III R F ]显示了新型的全氟烷基化反应。[Cp 2 Ti III R F ]试剂与包括酯和腈在内的羰基化合物具有广泛的反应性,其选择性远远高于传统R F Li和R F MgX试剂的报道。