中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 3,3-diphenyl-1-(4-(trifluoromethyl)phenyl)propan-1-one oxime | 1443367-77-8 | C22H18F3NO | 369.386 |
An efficient K2CO3-mediated intramolecular oxa-Michael cyclization of β,β-diarylated α,β-unsaturated ketoximes is described. This methodology allows access to arene-rich 2-isoxazoline derivatives bearing a quaternary center in excellent yields with an operationally simple experimental procedure. Deuterium-scrambling experiments were carried out to shed light on the reaction pathway. To demonstrate the synthetic utility of the method, a large-scale synthesis and Ullmann-type C–N bond-formation reaction between pyrazole and dibrominated isoxazoline was performed.