1Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, and State Key Laboratory of Biotherapy, West China Hospital, West China Medical School, Sichuan University , 29 Wangjiang Road, Chengdu 610064, PR China.
An efficient protocol for the synthesis of (hetero)aryl carboxylic esters has been achieved by Pd-catalyzed C-H carbonylation of (hetero)arenes with aryl formates. A relatively wide range of functional groups can be tolerated in this transformation, and the corresponding esters are obtained in good yields. On this basis, an intramolecular oxidative C-H/C-H coupling has been developed to prepare indolo[3,2-c]coumarins.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/25365772