Development of Iron-Catalyzed Addition of Organometallic Compoundsto Alkynes

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Iron catalysts were found to be effective for otherwise unattainable aryl- and alkenylmetalation of alkynes with organolithium compounds. o-(Trimethylsilyl)phenyllithium was converted to benzosilole derivatives, which are known to have a wide application in optoelectronic area. In addition, the reaction of terminal alkenes with cyclopentylmagnesium bromide under iron-copper cooperative catalysis was found to give primary Grignard reagents.