[Ru(L1)2][PF6]2 (3) and [Ru(L3)2][PF6]2 (4), respectively. Complex 1 reacted with CO to afford product [Ru(L2)(PPh3)(CO)Cl][Cl]. The catalytic activity for transfer hydrogenation of ketones was investigated. Complex 1 showed the highest activity, with a turnover frequency value of 1.44 × 103 h−1 for acetophenone, while complexes 3 and 4 were not active.
合成了四个含有
2-甲氧基吡啶基亚甲基或2-
羟基吡啶基亚甲基片段的NNN三齿
配体L 1 -L 4,并将其引入
钌中心。当(HOC 5 H 3 NCH 2 C 5 H 3 NC 5 H 7 N 2)(L 2)和(HOC 5 H 3 NCH 2 C 5 H 3 NC 6 H 6 N 3)(L 4)与RuCl 2反应(PPh 3)3,分别分离出两个
氯化
钌产物Ru(L 2)(PPh 3)Cl 2(1)和Ru(L 4)(PPh 3)Cl 2(2)。(MeOC 5 H 3 NCH 2 C 5 H 3 NC 5 H 7 N 2)(L 1)和(MeOC 5 H 3 NCH 2 C 5 H 3 NC 6 H 6 N 3)(L 3)的反应)在NH 4 PF 6存在下,用RuCl 2(PPh 3)3生成两个阳离子型络合物[Ru(L 1)2 ] [PF 6 ] 2(3)和[Ru(L 3)2 ] [PF 6 ]分别为2