Abstract
Abstract1H‐Inden‐1‐ylidene derivatives have been synthesized using a simple and efficient Pd‐catalyzed annulation of functionalized (E)‐3‐(2‐bromophenyl) acrylaldehyde with internal alkynes. The proposed mechanism involves an oxidative addition and carbopalladation of an alkyne to generate a vinyl palladium intermediate followed by β‐hydrogen elimination. These pre‐functionalized indene‐based cyclic precursors can be potential bioactive systems for drug discovery and development.
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