Convergent Synthesis of Fluorene Derivatives by a Rhodium‐Catalyzed Stitching Reaction/Alkene Isomerization Sequence

A convergent synthetic method for the synthesis of fluorene derivatives has been developed by devising a rhodium‐catalyzed stitching reaction/alkene isomerization sequence. The reactions proceed smoothly under mild conditions for a variety of substrate combinations, and extended π‐conjugation systems are also readily accessible by utilizing this synthetic method. Optical properties of the obtained fluorene derivatives have also been examined. π‐Conjugated compounds: A convergent synthetic method for the formation of fluorene derivatives has been developed through a rhodium‐catalyzed stitching reaction/alkene isomerization sequence. The reactions proceed smoothly under mild conditions for a variety of substrate combinations, and extended π‐conjugation systems are also readily accessible by utilizing this method.