Palladium-Catalyzed Cross-Coupling Reaction of Alkyltrifluorosilanes with Aryl Halides
作者:Hayao Matsuhashi、Satoshi Asai、Kazunori Hirabayashi、Yasuo Hatanaka、Atsunori Mori、Tamejiro Hiyama
DOI:10.1246/bcsj.70.437
日期:1997.2
A cross-coupling reaction of alkyltrifluorosilanes with aryl halides was achieved using a catalytic amount of tetrakis(triphenylphosphine)palladium(0) and excess of tetrabutylammonium fluoride (TBAF) at 100 °C with high chemoselectitvity. Functional groups like nitro, ketone carbonyl, and formyl tolerated the coupling conditions. Because potassium(18-crown-6) alkyltetrafluorosilicates also underwent
使用催化量的四(三苯基膦)钯 (0) 和过量的四丁基氟化铵 (TBAF) 在 100 °C 下以高化学选择性实现烷基三氟硅烷与芳基卤化物的交叉偶联反应。硝基、酮羰基和甲酰基等官能团耐受偶联条件。因为钾(18-冠-6)烷基四氟硅酸盐也在额外摩尔量的 TBAF 存在下发生交叉偶联反应,所以假设偶联反应的活性物质是五配位硅酸盐。认为需要过量的 TBAF 来捕获交叉偶联反应的催化循环中产生的四氟硅烷。