blocks was successfully synthesized and employed for the hydroboration of alkynes with bis(pinacolato)diboron (B2Pin2). 1 displays good thermostability and excellent solvent stability. Catalytic explorations reveal that 1 can serve as a high efficient heterogeneous catalyst for this reaction with a record TOF value of 310 h−1 under mild conditions, and 1 as catalysts which can be recycled at least five
A method for the synthesis of 1,1‐diborylalkenesthrough a Brønstedbasecatalyzedreactionbetweenterminalalkynes and bis(pinacolato)diboron has been developed. The procedure allows direct synthesis of functionalized 1,1‐diborylalkenes from various terminalalkynes including propiolates, propiolamides, and 2‐ethynylazoles.