State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, No. 5625, Renmin Street, Changchun 130022, China.
Chem Commun (Camb). 2020 May 11;56(38):5162-5165. doi: 10.1039/d0cc01745k. Epub 2020 Apr 7.
Hydrogenolysis of the scorpionate-supported calcium benzyl complex [(Tp)Ca(p-CHCH-Me)(THP)] (Tp = hydrotris(3-adamantyl-5-isopropyl-pyrazolyl)borate, THP = tetrahydropyran) (2-THP) afforded the mononuclear calcium hydrido complex [(Tp)Ca(H)(THP)] (3). Under mild conditions (40 °C, 10 atm H, 5 mol% cat.), complex 3 effectively catalyzed the hydrogenation of a variety of alkenes, including activated alkenes, semi-activated alkenes, non-activated terminal and internal alkenes. Mononuclear calcium unsubstituted alkyl complex [(Tp)Ca{(CH)Ph}(THP)] (6), proposed as the catalytic hydrogenation intermediate, was isolated and structurally characterized.
(三(3- 金刚烷基-5-异丙基-吡唑基)硼氢化钙配合物 [(Tp)Ca(p-CHCH-Me)(THP)] (Tp = 氢三(3- 金刚烷基-5-异丙基-吡唑基)硼酸盐，THP = 四氢吡喃) (2-THP) 的氢解反应得到单核钙氢化配合物 [(Tp)Ca(H)(THP)] (3)。在温和条件下 (40°C，10 大气压 H，5 mol% 催化剂)，配合物 3 能有效催化多种烯烃的氢化反应，包括活性烯烃、半活性烯烃、非活性末端和内部烯烃。单核钙未取代的烷基配合物 [(Tp)Ca{(CH)Ph}(THP)] (6)，被提出为催化氢化反应的中间体，被分离并进行了结构表征。
