An iron‐catalyzed hydroboration of alkynes to produce vinylboronates has been examined. With a straightforward system composed of iron carbonyls and pinacolborane, good to excellent yields and chemoselectivities were achieved for a variety of alkynes.
Herein, the iron-catalyzed reduction of a variety of alkynes with silanes as a reductant has been examined. With a straightforward catalyst system composed of diiron nonacarbonyl and tributyl phosphane, excellent yields and chemoselectivities (>99%) were obtained for the formation of the corresponding alkenes. After studying the reaction conditions, and the scope and limitations of the reaction, several attempts were undertaken to shed light on the reaction mechanism.
In the present study, the properties of new monodentate phosphane ligands with a N,N-diphenyl-1H-pyrrol-1-amine moiety have been investigated. The ligands are easily accessible by lithiation of N,N-diphenyl-1H-pyrrol-1-amine in the 2-position and by quenching with phosphane chlorides (2: R = tBu, 3: R = Ph). After characterization of the ligands,
In the present study the catalytic performance of a nickel complex stabilized by an oxygen-bridged bis(silylene) ligand was examined in cross-coupling reactions of aryl halides with organometallic zinc and Grignard reagents. Good to excellent catalytic activity was observed for a variety of substrates with this system.
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