The Rh(III)-catalyzed C-H activation initiated cyclization of benzoic acids with electron-rich geminal-substituted vinyl acetates was described. The reaction was employed to prepare a range of 3-aryl and 3-alkyl substituted isocoumarins selectively.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/25436434