Ce-Al-MCM-41: an efficient catalyst for Mukaiyama-Michael reaction

摘要

The activity of cerium containing Al-MCM-41 mesoporous materials has been studied for carbon-carbon bond formation reaction like Mukaiyama-Michael reaction under mild liquid phase conditions. The catalysts were synthesized by hydrothermal method at 383 K for 24-36 h in Teflon-lined autoclave and characterized thoroughly by XRD, UV-VIS, TEM, EPR, XPS, 27Al NMR, NH3-TPD, pyridine-IR and AAS in order to obtain well-ordered M41S type materials. The Mukiayama-Michael reactions between silyl enol ether and , -unsaturated ketones give Michael product in very good yields (100% selectivity). The catalysts were reusable.