Cross dehydrogenative coupling of <i>N</i>-aryltetrahydroisoquinolines (sp<sup>3</sup> C–H) with indoles (sp<sup>2</sup> C–H) using a heterogeneous mesoporous manganese oxide catalyst
作者:B. Dutta、V. Sharma、N. Sassu、Y. Dang、C. Weerakkody、J. Macharia、R. Miao、A. R. Howell、S. L. Suib
DOI:10.1039/c7gc01919j
日期:——
heterogeneous catalytic approach for selective coupling of C1 of N-aryltetrahydroisoquinolines with C3 of indoles in the presence of mesoporous manganese oxides. Our work involves a detailed mechanistic investigation of the reaction on the catalyst surface, backed by DFT computational studies, to understand the superior catalytic activity of manganese oxides.
AIE-active tetraphenylethene functionalized metal–organic framework for selective detection of nitroaromatic explosives and organic photocatalysis
作者:Qiu-Yan Li、Zheng Ma、Wen-Qiang Zhang、Jia-Long Xu、Wei Wei、Han Lu、Xinsheng Zhao、Xiao-Jun Wang
DOI:10.1039/c6cc04997d
日期:——
A luminescent MOF containing an AIE-active TPE moiety works as a selective sensor for detecting nitroaromatic explosives, as well as an efficient heterogeneous photocatalyst for CDC reactions mediated by visible light.
A novel stable radical cation triarylaminiumsalt able to induce aerobic oxidative α-C–H functionalization of tertiary amines in catalytic amounts has been developed. The reaction is performed in the absence of any other additives under mild conditions and only requires atmosphere air as a sustainable co-oxidant.
An elegant cascade cross‐coupling and in situ hydrogenation reaction has been established by visiblelightcatalysis. Combining cheap and earth‐abundant eosin Y as a photosensitizer and the cobalt chloride complex, Co(dmgH)2Cl2 (dmgH=dimethylglyoximate), as a catalyst, the desired oxidative cross‐coupling products and reductive hydrogenation products could be achieved in good to excellent yields without
Cross-dehydrogenative-coupling reaction has long been recognized as a powerful tool to form a C-C bond directly from two different C-H bonds. Most current processes are performed by making use of stoichiometric amounts of oxidizing agents. We describe here a new type of reaction, namely cross-coupling hydrogen evolution (CCHE), with no use of any sacrificial oxidants, and only hydrogen (H2) is generated
交叉脱氢偶联反应长期以来被认为是直接由两个不同的 CH 键形成 CC 键的有力工具。大多数当前方法是通过使用化学计量量的氧化剂进行的。我们在此描述了一种新型反应,即交叉偶联析氢 (CCHE),不使用任何牺牲氧化剂,仅产生氢气 (H2) 作为副产物。通过将曙红 Y 和石墨烯负载的 RuO2 纳米复合材料 (G-RuO2) 结合作为光敏剂和催化剂,在室温可见光照射下以定量产率获得所需的交叉偶联产物和 H2。