Hydroboration of CO2 catalyzed by heteroscorpionate zwitterionic zinc and magnesium hydride complexes
作者：Wenhao He, Xinli Liu* and Dongmei Cui*
關鍵字：CARBON-DIOXIDE，REDUCTION，METHANOL，HYDROSILYLATION，REACTIVITY，ACTIVATION，PAIRS，C1
論文來源：期刊
發表時間：2022年
The heteroscorpionate zinc hydride complex LZnH 2, (L = (MePz)(2)CP(Ph)(2)NPh, MePz = 3,5-dimethylpyrazolyl), its formate complex 3, and magnesium hydride complex LMgH 5 with the same ligand were synthesized and detected for the catalytic hydroboration reaction of CO2. With BH3 center dot SMe2 as the reductant, zinc-based hydride complex 2 and formate complex 3 show a similar capability of hydroboration of CO2, featuring excellent reactivity and selectivity. The conversion of BH3 center dot SMe2 reached 84%, the highest TON of 252 compared to other zinc catalysts was achieved at room temperature and borate ester products at reduction levels of CH3OH were obtained. Magnesium-based hydride complex 5 showed inferior activity for the hydroboration reduction of CO2.
