Vinylic CF bond activation with low-valent zirconocene: the generation and cross-coupling reactions of 1-fluorovinylzirconocene
作者:Masaki Fujiwara、Junji Ichikawa、Tatsuo Okauchi、Toru Minami
DOI:10.1016/s0040-4039(99)01491-4
日期:1999.10
is treated with zirconocene equivalent ‘Cp2Zr’ to generate thermostable 1-fluorovinylzirconocene via a CF bond cleavage. This 1-fluorovinylzirconocene can be used for CC bond formation through the cross-coupling with aryl iodides in the presence of palladium catalyst and zinc iodide, leading to (Z)-1-aryl-2-(p-dimethylaminophenoxy)-1-fluoroolefins in good yields.
易于从2,2,2-三氟乙醇制得的(p -2,2-二氟乙烯基氧基苯基)二甲基胺经锆茂等效物'Cp 2 Zr'处理,通过CF键断裂生成热稳定的1-氟乙烯基锆茂。通过在钯催化剂和碘化锌存在下与芳基碘化物交叉偶联,可将这种1-氟乙烯基锆茂合金用于CC键的形成,从而生成(Z)-1-芳基-2-(对-二甲基氨基苯氧基)-1 -氟代烯烃收率高。