Synthesis of dihydrobenzo[1,4]oxazines using copper catalyzed intramolecular ring closure reaction
作者:Paramesh Jangili、Jajula Kashanna、Biswanath Das
DOI:10.1016/j.tetlet.2013.04.090
日期:2013.6
The synthesis of dihydrobenzo[1,4]oxazines has been accomplished efficiently by copper catalyzed intramolecular cyclization of the adducts formed by the treatment of 1,2-cyclic sulfamidates with 2-halo phenols. The products (except two) are new and their yields are high. The catalyst is easily available and less expensive.
二氢苯并[1,4]恶嗪的合成已通过铜催化的分子内环化反应完成,该环化反应是通过2-卤代苯酚处理1,2-环氨基磺酸盐而形成的。这些产品(两种除外)是新产品,并且单产很高。该催化剂容易获得且较便宜。