Radical C(sp<sup>2</sup>)–H Trifluoromethylation of Aldehydes in Aqueous Solution
作者:Pei Zhang、Haigen Shen、Lin Zhu、Weiguo Cao、Chaozhong Li
DOI:10.1021/acs.orglett.8b03012
日期:2018.11.16
The copper-mediated C(sp2)–H trifluoromethylation of aldehydes is described. The reaction of aldehydes with (bpy)Cu(CF3)3, Et3SiH, and K2S2O8 in aqueous acetone at room temperature provides the corresponding trifluoromethyl ketones in satisfactory yields. The protocol is applicable to both aliphatic and aromatic aldehydes and exhibits a broad substrate scope and wide functional group compatibility
描述了铜介导的醛的C(sp 2)–H三氟甲基化。在室温下,醛与(bpy)Cu(CF 3)3,Et 3 SiH和K 2 S 2 O 8在丙酮水溶液中的反应以令人满意的产率提供了相应的三氟甲基酮。该协议适用于脂族和芳族醛,并具有广泛的底物范围和广泛的官能团相容性。提出了一种涉及Cu(II)介导的酰基三氟甲基化的机理。