borylation of β-trifluoromethyl-α,β-unsaturated ketones was efficiently achieved by means of bis(pinacolato)diboron (B2pin2), affording the enantioenriched products in good yields with high enantioselectivities. CuI and (R,S)-Josiphos consist of the most efficient catalyst system under mild conditions. In the absence of the chiral ligand, the reactions could be performed more efficiently to form β-ketone
β-三
氟甲基-α,β-不饱和酮的
铜催化
硼化可以通过双(
频哪醇)二
硼(B 2 pin 2)有效地实现,从而以高收率和高对映选择性提供富含对映体的产物。CuI和(R,S)-Josiphos由温和条件下最有效的催化剂体系组成。在不存在手性
配体的情况下,反应可以更有效地进行以形成β-酮衍
生物,其在α,β-不饱和酮底物的β-碳原子上被直接
硼化并被三
氟甲基化。本协议提供了一种有前途的方法来访问带有CF 3和有机
硼官能团的立体碳中心。