Synthesis of benzoxazine and 1,3-oxazine derivatives via ligand-free copper(I)-catalyzed one-pot cascade addition/cyclization reaction
作者:Guodong Shen、Dingben Chen、Yiliang Zhang、Manman Sun、Kai Chen、Cong Jin、Kaining Li、Weiliang Bao
DOI:10.1016/j.tet.2011.10.075
日期:2012.1
A novel and efficient synthesis of benzoxazine and 1,3-oxazine derivatives via ligand-free copper(I)-catalyzed one-pot cascade addition/cyclization reaction has been developed. A variety of carbodiimides coupled with o-halophenylmethanols and/or substituted (Z)-3-iodoprop-2-en-1-ols to give the corresponding products in moderate to excellent yields under the mild condition.