Synthesis of isochromenones and oxepines via Pd-catalyzed cascade cyclization of alkynes and benzynes involving C-H activation |
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| Authors: | Parthasarathy Kanniyappan Han Han Prakash Chandran Cheng Chien-Hong |
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| Institution: | Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan. |
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| Abstract: | A new method for the synthesis of various isochromen-6-ones and phenanthro1,10-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. |
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