FeCl<sub>3</sub>-promoted tandem 1,4-conjugate addition/6-<i>endo-dig</i> cyclization/oxidation of propargylamines and benzoylacetonitriles/malononitriles: direct access to functionalized 2-aryl-4<i>H</i>-chromenes
作者:Xinwei He、Hui Wang、Xiaoting Cai、Qianqian Li、Jiajia Tao、Yongjia Shang
DOI:10.1039/c8ob01927d
日期:——
An efficient and concise procedure has been developed for the synthesis of functionalized 2-aryl-4H-chromenes based on a tandem reaction of propargylamines and benzoylacetonitriles/malononitriles in the presence of FeCl3 as an environmentally friendly promoter. This reaction involves a highly efficient tandem sequence consisting of 1,4-conjugate addition, 6-endo-dig cyclization, and oxidation. This
一种有效和简洁的方法已经为官能化的2-芳基4的合成已经开发ħ -chromenes基于炔丙胺和benzoylacetonitriles的串联反应/丙二腈在的FeCl存在3作为环保型启动子。该反应涉及由1,4-缀合物加成,6-内-挖-环化和氧化组成的高效串联序列。该方案可耐受多种官能团,从而为制造2-芳基-4 H-色烯骨架提供了一种实用而有效的方法。