4-Tol2(η5-C4CO)Ru(CO)2]24. Complex 5 reacts with aldehydes both stoichiometrically and catalytically, providing hydroboration products under mild reaction conditions. A Hammett correlation plot of para-substituted benzaldehydes provided a ρ value of +0.91. Catalytic hydroboration of aryl imines provided high yields of the corresponding amines. The hydroboration of aryl ketones, however, required strongly electron-withdrawing
硼-取代的
钌hydroxycycylopentadienyl氢化[2,5-PH 2 -3,4-托尔2(η 5 -C 4 COB
PIn)的Ru(CO)2 H](B
PIN = 4,4,5,5-四甲基-1- -1,3,2-二氧
硼戊环)5通过加入
频哪醇的
钌二聚体[2,5-PH合成2 -3,4-托尔2(η 5 -C 4 CO)的Ru(CO)2 ] 2 4。复杂5在
化学计量和催化上与醛反应,在温和的反应条件下提供
硼氢化产物。对位取代的
苯甲醛的Hammett相关图提供了+0.91的ρ值。芳基
亚胺的催化加氢
硼化提供相应胺的高产率。然而,芳基酮的氢
硼化需要强烈的吸电子取代基以在合理的反应时间内诱导氢
硼化。