Abstract
AbstractN‐Acyloxyphthalimide has been demonstrated as a multitasking directing group considering its easy accessibility, multiple reactive sites, and multifarious transformations available to generate valuable structural diversified scaffolds. Polysubstituted heterocycles, such as isocoumarin, isoquinolone, and its second annulation products, could be obtained from N‐acyloxyphthalimide and alkynes through a one‐pot reaction in the presence of nucleophilic reagents. Additionally, the ester group possessed on the resulting heterocycles could serve as a new building block to direct further functionalization.
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