期刊
ADVANCED SYNTHESIS & CATALYSIS
卷 350, 期 6, 页码 869-882出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.200700568
关键词
hetero-Diels-Alder reaction; oxidation; oxo ligands; ruthenium
资金
- Engineering and Physical Sciences Research Council [GR/S85368/01, EP/C515757/1] Funding Source: researchfish
New insights into the mechanism for the transition metal-mediated oxidation of hydroxamic acids to give intermediate acyl nitroso species, with subsequent hetero-Diels-Alder trapping are presented. The activation of triphenylphosphine-ligated ruthenium-salen complexes is examined, and evidence is presented for the ruthenium-oxo species which are involved in the oxidative process of the hydroxamic acid. The observation of the lack of asymmetric induction involved in the intermolecular cycloaddition process involving the intermediate acyl nitrsoso species is explained, with the aid of comparing the ruthenium-salen-based systems with nitrosotoluene, and copper(I)/copper(II) BINAP-based catalysis of nitrosopyridine complexes. This study demonstrates the importance of secondary coordination to achieve asymmetric induction in nitroso-Diels-Alder reactions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据