Efficient Heck cross-coupling of 3-iodo-benzopyrones with olefins under microwave irradiation without phosphine
作者:Yikai Zhang、Zhiliang Lv、Hanyu Zhong、Mingfeng Zhang、Tao Zhang、Wannian Zhang、Ke Li
DOI:10.1016/j.tet.2012.09.017
日期:2012.11
different terminal olefins with various 3-iodo-benzopyrones including stericallyhindered, electron-rich, electron-neutral, and electron-deficient is developed. It proceeded faster and generally gave good to excellent yields under microwave irradiation, phosphine-free, and air condition. The reaction could render this method particularly attractive for the efficient preparation of biologically and