central goal in catalysis. This would be especially interesting when the reactivity and selectivity patterns can be tuned. Herein, we introduced the first Mn-catalyzed selective C-alkylation and olefination of fluorene, and indene with alcohols. Various substrates including benzylic, heteroaromatic, and aliphatic primary and secondary alcohols are employed as alkylating agents. Mechanistic investigations
The enantioselective synthesis of polycyclic aromatic hydrocarbon (PAH)‐based planar chiralcyclophanes was achieved for the first time by the rhodium‐catalyzed intramolecular regio‐ and enantioselective [2+2+2] cycloaddition of tethered diyne‐benzofulvenes followed by stepwise oxidative transformations. The thus synthesized planar chiral bent cyclophanes, that possess bent p‐terphenyl‐ and 9‐fluorenone‐cores
An efficientmethod for the synthesis of benzofulvenes 3 was demonstrated via the rapid condensation of indene with various aldehydes catalyzed using cesium hydroxide monohydrate. Single condensation products 3 and double condensation products 4 can be obtained as main products respectively by changing the ratio of the reactants easily.