Efficient Dehydrogenation of Amines and Carbonyl Compounds Catalyzed by a Tetranuclear Ruthenium-mu-Oxo-mu-Hydroxo-Hydride Complex.

Efficient Dehydrogenation of Amines and Carbonyl Compounds Catalyzed by a Tetranuclear Ruthenium-mu-Oxo-mu-Hydroxo-Hydride Complex.
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DOI:
10.1021/om8010883
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发表时间:
2009-01-29
期刊:
影响因子:
2.8
通讯作者:
Lee DW
Lee DW
中科院分区:
化学2区
文献类型:
--
作者:
Yi CS;Lee DW

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四核Ru-μ-氧代-μ-羟基氢化物络合物{[(PCy3)(CO)RuH]4(μ4-O)(μ3-OH)(μ2-OH)}(1)对胺和羰基化合物的转移脱氢反应是一种高效的催化剂。例如,2-甲基吲哚脱氢的初始转化率为1.90~(-1)S~(-1),t=7950。从吲哚-N-D1和吲哚-α-D2的脱氢反应中观察到广泛的H/D扰乱现象,表明脱氢反应是一种具有C-H键激活速率限制步骤的单氢化机理。
The tetranuclear ruthenium-μ-oxo–μ-hydroxo-hydride complex {[(PCy3)(CO)RuH]4(μ4-O)(μ3-OH)(μ2-OH)} (1) was found to be a highly effective catalyst for the transfer dehydrogenation of amines and carbonyl compounds. For example, the initial turnover rate of the dehydrogenation of 2-methylindoline was measured to be 1.9 s-1 with the TON of 7950 after 1 h at 200 °C. The extensive H/D scrambling patterns observed from the dehydrogenation reaction of indoline-N-d1 and indoline-α-d2 suggest a monohydride mechanistic pathway with the C-H bond activation rate-limiting step.
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