observed, which is different than the normal H/D kinetic isotope effects (KIEs) usually observed for polar aromatics. This result indicated that the oxidation started by photo-induced hvb+ can be the rate-determiningstep.
在TiO 2水溶液中弱极性芳族化合物的光催化羟基化反应中,观察到一系列的反向H / D KIE为0.7-0.8,这与通常在极性芳族化合物中观察到的正常H / D动力学同位素效应(KIEs)不同。该结果表明,由光诱导的h vb +开始的氧化可以是速率确定步骤。
Ruthenium Dihydrogen Complex for C–H Activation: Catalytic H/D Exchange under Mild Conditions
作者:Martin H. G. Prechtl、Markus Hölscher、Yehoshoa Ben‐David、Nils Theyssen、David Milstein、Walter Leitner
DOI:10.1002/ejic.200800359
日期:2008.8
Catalytic H/D-exchange reactions were studied with [Ru(dtbpmp)(η2-H2)(H)2] (1) as catalyst. Under mild reaction conditions (25–75 °C) a wide range of arenes and olefins undergo H/D exchange with [D6]benzene. A preference for protons at sp2 carbons was observed with conversions up to >90 % and significant regioselectivity in certain cases. For more reaction insights NMR-based kinetic studies were performed
Room Temperature Activation of Aromatic CH Bonds by Non-Classical Ruthenium Hydride Complexes Containing Carbene Ligands
作者:Daniela Giunta、Markus Hölscher、Christian W. Lehmann、Richard Mynott、Cornelia Wirtz、Walter Leitner
DOI:10.1002/adsc.200303091
日期:2003.9
ruthenium hydride complexes are promising lead structures for the CH bondactivation and functionalization of aromatic compounds. In the present paper, the preparation and crystallographic characterisation of the first organometallic complexes bearing dihydrogen ligands and N-heterocycliccarbene ligands in the same coordination sphere are described. The mixed phosphine/carbenecomplex [(IMes)Ru(H)2(H2)2(PCy3)]
非经典氢化钌络合物是用于芳族化合物的CH键活化和功能化的有前途的铅结构。在本文中,描述了在同一配位域中带有二氢配体和N-杂环卡宾配体的第一有机金属配合物的制备和晶体学表征。膦/卡宾复合物[(IMes)Ru(H)2(H 2)2(PCy 3)](IMes = 1,3-dimesityl-1,3-dihydro-2 H -imidazol-2-ylidene; 3a)在CH键的分子间和分子内激活中显示出独特的反应模式。特别是复杂的3a可以在室温下快速而显着地选择性降解简单芳香化合物中sp 2 CH键的分子间活化。
On the mechanism of aromatic hydroxylation by O(3P) atoms
作者:Elazar Zadok、Yehuda Mazur
DOI:10.1016/s0040-4039(00)71164-6
日期:1980.1
It is shown that O(3P) oxidation of aromatic compounds in the liquid phase leading to phenols may involve the intermediacy of triplet diradicals.