Abstract
A series of pyrrolopyridinones were prepared by using N‐Boc‐pyrrole‐2‐carbaldehyde as a starting material in an Ugi reaction followed by an acid‐mediated indole cyclization to result in the formation of a new C–C bond. Changes to the other starting materials in this Ugi/indole cyclization reaction sequence extended the scope of this method to include a nucleophilic substitution reaction and an Ugi/deprotection/cyclization (UDC) strategy, which provided access to two new series of heterocyclic compounds. This method represents a facile and efficient one‐pot procedure for the preparation of pyrrolopyridinones under acidic conditions.
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