期刊
RSC ADVANCES
卷 6, 期 96, 页码 93756-93767出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ra14382b
关键词
-
资金
- Fundacao para a Ciencia e Tecnologia (FCT), Portugal [PTDC/QEQ-QIN/3967/2014, UID/QUI/00100/2013, IF/01270/2013/CP1163/CT0007, SFRH/BPD/63710/2009, SFRH/BPD/99533/2014]
Two complexes with isoindole-core ligands of general formula [M{C6H4C(NH2) NC(ONCMe2)(2)}(2)](NO3)(2) (M = Co for 1 and M = Ni for 2) were studied as catalysts for the mild stereoselective alkane oxidation with m-chloroperbenzoic acid (m-CPBA) as an oxidant and cis-1,2-dimethylcyclohexane (cis-1,2-DMCH) as a main model substrate. Complex 1 disclosed a pronounced activity, with high retention of stereoconfiguration of substrates (>98% for cis-1,2-DMCH) and highest cis/trans ratio of tertiary alcohols (products) of 56, under mild conditions. The best achieved yields of tertiary cis-alcohols were of 13.7 and 50.5%, based on the substrate (cis-1,2-DMCH) and the oxidant (m-CPBA) respectively. Kinetic experiments, high bond and stereoselectivity parameters, kinetic isotope effect of 7.2(2) in the oxidation of cyclohexane, and incorporation of O-18 from (H2O)-O-18 support the involvement of Co-IV=O high-valent metal-oxo intermediates as main C-H attacking species.
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