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Electrolyser design controls position-divergent C–H carboxylation

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Science China Chemistry 2023年第6期66卷 1549-1550页

作者： Max Surke Rong Zhao lutz ackermann Institut für Organische und Biomolekulare Chemie Georg-August-Universitot GottingenTammannstraBe 237077 GotingenGermany Wohler Research Institute for Sustainable Chemistry Georg-August-Universitot GottingenTammannstraBe 237077 GotingenGermany German Center for Cardiovascular Research(DZHK) Potsdamer StraBe 5810785 BerlinGermany

In recent years,molecular electrochemistry has undergone a remarkable renaissance to surface as a sustainable strategy for organic synthesis and catalysis,gaining considerable momentum by the use of renewable forms of energy[1,2].Modern organic electrochemistry has the unique power to control chemo-,regio-,and position-selectivities through the judicious choice of the electrode material,the applied potential or an additional catalyst,among others[1,2].Despite the major advances in molecular electrochemistry,these approaches continue to predominantly rely on non-renewable fossil resources.

关键词： electrochemistry momentum catalysis

Recent advances in electrooxidative radical transformations of alkynes

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Science China Chemistry 2023年第3期66卷 703-724页

作者： Yan Zhang Zhenzhi Cai Svenja Warratz Chanchan Ma lutz ackermann Key Laboratory of the Ministry of Education for Advanced Catalysis Materials Drug Discovery&Innovation CenterCollege ofChemistry and Life SciencesZhejiang Normal UniversityJinhua 321000China Institut für Organische und Biomolekulare Chemie and Woehler Research Institute for Sustainable Chemistry(WISCh) Georg-August-Universität GöttingenGermany

During the past few years,electrochemical oxidative reactions through radical intermediates have emerged as an environmentally-benign,powerful platform for the facile formation of C–E(E=C,N,S,Se,O and Hal)bonds through singleelectron-transfer(SET)processes at the *** unsaturated molecules and unusual structural motifs can,for instance,be directly constructed under exceedingly mild reaction conditions through initial radical attack onto *** minireview highlights the recent advances in electrooxidation in radical reactions until June 2022,with a particular focus on radical additions onto alkynes.

关键词： electrosynthesis electrooxidation radicals alkynes additions difunctionalization

Bifurcated Rhodaelectro-catalyzed C−H Activation for the Synthesis of Pyrroles and Lactones

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Precision Chemistry 2023年第6期1卷 382-387页

作者： Simon L.Homölle Maximilian Stangier fraim Reyes lutz ackermann Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen37077 GöttingenGermany University of the Basque Country(UPV/EHU) 48940 LeioaBizkaiaSpain DZHK(German Centre for Cardiovascular Research) 10785 BerlinGermany

While electrocatalyzed alkyne annulations of arenes represent a powerful strategy for the assembly of heteroaromatic motives,electrochemical C(sp2)−H activations of alkenes remain ***,a strategy for the rhodaelectro-catalyzed function-alization of enamides is presented for the efficient construction of pyrroles using electricity as a sustainable ***,the tuning of the solvent system allowed a fascinating switch in chemoselectivity,which is not possible with traditionally used chemical oxidants,giving rise to lactone *** rhoda-electrocatalysis features a broad scope as well as high regio-and chemoselectivities.

关键词： C−H activation rhodium bifurcated electrochemistry sustainability pyrrole lactone

Scalable Rhodaelectro-Catalyzed Expedient Access to Seven-Membered Azepino[3,2,1-hi]indoles via [5+2] C-H/N-H Annulation

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CCS Chemistry 2022年第6期4卷 1858-1870页

作者： Yumeng Yuan Jinlan Zhu Zhongyuan Yang Shao-Fei Ni Qiufeng Huang lutz ackermann Fujian Key Laboratory of Polymer Science Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical EngineeringCollege of Chemistry and Materials ScienceFujian Normal UniversityFuzhouFujian 350007 Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou UniversityShantouGuangdong 515063 Institut Für Organische Und Biomolekulare Chemie Wohler Research Institute for Sustainable ChemsitryGeorg-August-Universitat Gottingen37077 Gottingen

We report the establishment of a rhodaelectrocatalyzed[5+2]N-H/C-H oxidative annulation of alkynes by 7-arylindoles,enabling the synthesis of seven-membered azepino[3,2,1-hi]indoles using electricity as the sole *** reaction could be scaled up to gram-scale by *** key rhodium(Ⅲ)intermediates were isolated and fully *** analysis,X-ray photoelectron spectroscopy studies,and density functional theory calculations are suggestive of a rhodium(Ⅲ-Ⅳ-Ⅱ-Ⅲ)manifold.

关键词： C-H activation electrocatalysis rhodium annulation indole

Nickela-electrocatalyzed sulfide and phosphine oxygenations with water

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Science China Chemistry 2021年第6期64卷 873-874页

作者： Long Yang Johanna Frey lutz ackermann Institut für Organische und Biomolekulare Chemie Georg-August-Universität GöttingenTammannstrasse 2Göttingen 37077Germany Wöhler Research Institute for Sustainable Chemistry(WISCh) Georg-August-Universität GöttingenTammannstrasse 2Göttingen 37077Germany

Molecular electrochemistry has emerged as an environmentally-friendly *** major recent momentum was gained in electrocatalyzed bond activations by earth-abundant 3 d transition metals[1],cost-effective nickela-electrocatalysis continuous to be underdevelopment for electrocatalysis[2].Nickel is an essential component of metalloproteins involved in catalytic aerobic oxygenation processes,for which nickel-dioxygen species were proposed as the key catalytic species[3].

关键词： catalyzed nickel Nickel

Cobaltaelectro-Catalyzed C—H Acyloxylation

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Chinese Journal of Chemistry 2019年第6期37卷 552-556页

作者： Cong Tian Uttam Dhawa Julia Struwe lutz ackermann Institut fur Organische und Biomolekulare Chemie Georg-August-Universitat GottingenTammannstraβe 237077 GottingenGermany

Cobaltaelectrocatalysis set the stage for sustainable C—H acyloxylations in biomass-derived γ-valerolactone as a renewable solvent. The sustainable electrocatalysis regime featured ample scope, along with high level... 详细信息

关键词： C-H activation cobalt electrosynthesis biomass solvent

Rhodaelectro-Catalyzed C–H and C–C Activation

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CCS Chemistry 2021年第2期3卷 1529-1552页

作者： Youai Qiu Cuiju Zhu Maximilian Stangier Julia Struwe lutz ackermann Institut für Organische und Biomolekulare Chemie Georg-August-Universität GöttingenGöttingen 37077

Rhodium(III)catalysis has set the stage for a plethora of oxidative C–H functionalizations over the last decade,which have predominantly employed stoichiometric amounts of toxic and expensive metal oxidants,such as silver(I)*** the meantime,electrosynthesis has emerged as an increasingly viable alternative for expensive and toxic ***,significant momentum has been achieved with the merger of electrocatalysis with organometallic C–H ***,user-friendly and robust rhodaelectro-catalysis has until very recently proven elusive for oxidative C–H *** minireview highlights the current knowledge and recent advances of electrooxidation in rhodium-catalyzed C–H or C–C activations,with a topical focus on contributions from the ackermann group through July 2020.

关键词： electrosynthesis rhodium catalysis C–H activation C–C activation mechanistic in-sights rhodaelectro-catalysis

过渡金属催化的区域选择性芳烃C—H键氧化生成C—O键（英文）

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有机化学 2019年第1期39卷 59-73页

作者：杨帆致张晗刘旭日王博 lutz ackermann 北京理工大学前沿交叉科学研究院北京100081 北京理工大学化学与化工学院北京100081 哥廷根大学有机与生物分子化学研究所哥廷根德国37077

近年来过渡金属催化的芳烃直接C—H氧化反应取得了重要进展,该策略被用于多种酚类化合物的制备.反应体系使用的过渡金属催化剂包括钯、铜、钌、铱等;氧化剂包括高价碘化合物、过硫酸盐、氧气等.此前已有多篇综述就特定的过渡金属或氧化... 详细信息

近年来过渡金属催化的芳烃直接C—H氧化反应取得了重要进展,该策略被用于多种酚类化合物的制备.反应体系使用的过渡金属催化剂包括钯、铜、钌、铱等;氧化剂包括高价碘化合物、过硫酸盐、氧气等.此前已有多篇综述就特定的过渡金属或氧化剂参与的C—H氧化反应进行了详尽的讨论.本综述着重探讨过渡金属催化的邻、间、对位选择性的芳烃C—H氧化反应,并试图阐释上述区域选择性的产生机制,其中包括导向基团的螯合辅助作用、配体控制、底物自身因素等.在讨论部分提出了过渡金属催化的芳烃C—H氧化反应中存在的问题以及影响该策略发展应用的可能限制因素.

关键词：过渡金属芳烃 C-H氧化区域选择性导向基团

Simulation of the SMILE Soft X-ray Imager response to a southward interplanetary magnetic field turning

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Earth and Planetary Physics 2024年第1期8卷 39-46页

作者： Andrey Samsonov Graziella Branduardi-Raymont Steven Sembay Andrew Read David Sibeck lutz Rastaetter Mullard Space Science Laboratory University College LondonDorking RH56NTUK Leicester University Leicester LE17RHUK Goddard Space Flight Center National Aeronautics and Space AdministrationGreenbeltMD 20771USA

The Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)Soft X-ray Imager(SXI)will shine a spotlight on magnetopause dynamics during magnetic *** simulate an event with a southward interplanetary magnetic field turning and produce SXI count maps with a 5-minute integration *** making assumptions about the magnetopause shape,we find the magnetopause standoff distance from the count maps and compare it with the one obtained directly from the magnetohydrodynamic(MHD)*** root mean square deviations between the reconstructed and MHD standoff distances do not exceed 0.2 RE(Earth radius)and the maximal difference equals 0.24 RE during the 25-minute interval around the southward turning.

关键词： magnetopause magnetic reconnection solar wind charge exchange southward interplanetary magnetic field numerical modeling Solar wind Magnetosphere Ionosphere Link Explorer(SMILE) Soft X-ray Imager