Zn-mediated rhodium-catalyzed α-trifluoromethylation of ketones via silyl enol ethers
作者:Kazuyuki Sato、Takashi Yuki、Atsushi Tarui、Masaaki Omote、Itsumaro Kumadaki、Akira Ando
DOI:10.1016/j.tetlet.2008.04.030
日期:2008.5
The treatment of silyl enol ethers of ketones with CF3–I and Et2Zn in the presence of RhCl(PPh3)3 in DME gave α-trifluoromethyl ketones in good yields. The reaction can be widely applicable to silyl enol ethers derived from aliphatic or aromatic ketones. In the absence of the rhodium catalyst, the reaction was very slow and the yields were quite poor.
在DME中,在RhCl(PPh 3)3存在下,用CF 3 –I和Et 2 Zn处理酮的甲硅烷基烯醇醚可得到高产率的α-三氟甲基酮。该反应可广泛应用于衍生自脂族或芳族酮的甲硅烷基烯醇醚。在没有铑催化剂的情况下,反应非常缓慢并且收率很差。