Samarium(iii) catalyzed synthesis of alkenylboron compounds via hydroboration of alkynes

The homoleptic lanthanide complex Sm[N(TMS)(2)](3) is an efficient rare-earth catalyst for the hydroboration of alkynes to the corresponding alkenylboron compounds. Practical applications were demonstrated through a gram-scale synthesis and further transformations of an alkenylboron ester to a series of functional compounds. Isotopic labeling experiments, H-1 NMR monitoring and kinetic studies were conducted to elucidate the reaction mechanism.

Automated summary

The homoleptic lanthanide complex Sm[N(TMS)(2)](3) is an efficient rare-earth catalyst for the hydroboration of alkynes, as demonstrated through gram-scale synthesis and subsequent transformations. The reaction mechanism was elucidated through isotopic labeling experiments, H-1 NMR monitoring, and kinetic studies.