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。
JP5894739
申请人:——
公开号:——
公开(公告)日:——
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