劳森试剂 、
1-(4-cyanobenzoyl)-4-piperidone ethylene ketal 在
silica gel 、
ethyl acetate n-hexane 作用下,
以
1,4-二氧六环 为溶剂,
反应 1.0h,
以to afford the product as a yellow solid (353 mg), MS (+EI) 288 (M+), 1H NMR(CDCl3) 7.67 (2H, d, J 7 Hz), 7.36 (2H, d, J 7 Hz), 4.5-4.45 (2H, m), 4.06-3.98 (4H, m), 3.58 (2H, dd, J 6, 4.2 Hz), 1.94 (2H, t, J 6 Hz), 1.69 (2H, t, J 6 Hz)的产率得到1-((4-Cyanophenyl)thioxomethyl)-4-piperidone ethylene ketal