Synthesis of isochromenones and oxepines via Pd-catalyzed cascade cyclization of alkynes and benzynes involving C–H activation
作者:Kanniyappan Parthasarathy、Han Han、Chandran Prakash、Chien-Hong Cheng
DOI:10.1039/c2cc31807e
日期:——
A new method for the synthesis of various isochromen-6-ones and phenanthro[1,10-bc]oxepines via a palladium-catalyzed cascade carbocyclization of 2-iodobenzyl-3-phenylpropiolates and 1-iodo-2-(2-(phenylethynyl)benzyloxy)benzenes with arynes is described. The reactions involve interesting biscarbocyclization of alkynes and benzynes and C-H bond activation.
通过
钯催化2-
碘苄基-
3-苯基丙酸酯和1-
碘-2-(2-(
苯基
乙炔基)的级联
碳环化反应,合成各种异色素6-
酮和
菲[1,10-bc]
氧杂
环丁烷的新方法描述了具有
芳烃的)苄
氧基)
苯。这些反应涉及炔和
苯炔的有趣的双
碳环化和CH键的活化。