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三氨基环丙烯离子(TAC^(+))催化的光电协同邻位C–H键接力氧化

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Science Bulletin 2023年第4期68卷 367-369,M0003页

作者：岳会锋朱宸 magnus Rueping KAUST Catalysis Center(KCC) King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

The development of general,straightforward,and practical methodologies to assemble complex structural skeletons under mild reaction conditions is a long-pursued goal in organic *** and electrocatalysis represent two of the most promising processes towards this objective,and in addition to their mild and scalable operating conditions.

关键词： conditions chemistry straight

基于电化学钴催化C-H活化的多样化手性骨架的构建

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Science Bulletin 2023年第16期68卷 1730-1732页

作者：岳会锋朱宸 magnus Rueping Key Laboratory of Molecule Synthesis and Function Discovery(Fujian Province University) College of ChemistryFuzhou UniversityFuzhou 350108China KAUST Catalysis Center(KCC) King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia

Transition metal-catalyzed C-H functionalizations,which transform ubiquitous C-H bonds into diverse and valuable functionalities in a single step,have emerged as a direct and efficient methodology for constructing synthetically useful and multifunctional organic molecules[1].Despite the significant advantages,some drawbacks such as the requirement of a stoichiometric amount of chemical oxidant and the resulting low functional group tolerance,byproduct generation and separation issues remain to be solved(Fig.1a).Notably,the development of electrochemistry has introduced new dimensions to the field of organic synthesis[2].Employing electric energy as both an oxidant and a reductant in a single process,electrochemistry offers numerous advantages,including mild reaction conditions,a wide substrate scope,and enhanced sustainability.

关键词： electrochemistry dimensions bonds

SOME CONSIDERATIONS ON THE MEANING OF gi bi_2-(in)-DU_3 IN THE ROYAL INSCRIPTION OF UTU-HEGAL

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Journal of Ancient Civilizations 2000年第1期15卷 59-68页

作者： magnus Widell

Conformation Governed Reactivity of Fused Thia-Sapphyrin Dimers Bearing Multiply Fused Heteroaromatic Rings

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CCS Chemistry 2023年第6期5卷 1332-1342页

作者： Qizhao Li Masatoshi Ishida Chengjie Li Glib Baryshnikov Feng Sha Bin Zhu Xinyan Wu HansÅgren Hiroyuki Furuta Yongshu Xie Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CenterFrontiers Science Center for Materiobiology and Dynamic ChemistryInstitute of Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyShanghai 200237 Department of Chemistry Graduate School of ScienceTokyo Metropolitan UniversityTokyo 192-0397 Department of Science and Technology Laboratory of Organic ElectronicsLinköping UniversityNorrköping SE-60174 Department of Physics and Astronomy Uppsala UniversityUppsala SE-75120 Department of Applied Chemistry Graduate School of EngineeringKyushu UniversityFukuoka 819-0395 Research Organization of Science and Technology Ritsumeikan UniversityKusatsu 525-8577

Suitable conformations and proper alignment of complex natural macrocycles are essential for achieving their unique ***,such artificial macrocycle prototypes are still limited due to synthetic *** this respect,directly linked porphyrin analog dimers display tunable conformations and intriguing properties,and thus,they may be employed as a class of promising ***,we report that one-pot oxidative dimerization of thiahydrosapphyrin 1 yields dimers,2anti and 2syn,comprising a transoid-oriented plate-like bipyrrolo[1,2-a]*** thiophene-containing tetrapyrrole arching subunits in 2 lie at the opposite(anti)and same(syn)sides of the plate,***,multiply fused cisoid-orientated dimer 3 was also obtained;a polycyclic pyrrolo-bridged bipyrroloindole derivative tethered with fullyπ-conjugated bridges was ***,the anti-dimer 2anti underwent subsequent oxidative fusion to furnish a further-fused[6.***.5.7.5.***.5.6]-octacyclic compound *** contrast,the syn-orientated 2syn could not be further fused due to the long distance between the potential reaction *** study provides a unique approach to the fused dimeric porphyrin analogs for potential near-infrared optical materials by a simple oxidation *** also reveals the importance of conformation-modulated reactivity for constructing complex porphyrin arrays.

关键词： porphyrins porphyrinoids sapphyrins π-conjugated systems porphyrin oligomers nearinfrared dyes macrocycles

DER MONDGOTT SIN IN DER ALTAKKADISCHEN PERIODE:EINIGE BEMERKUNGEN BER DIE ERWHNUNGEN IN DEN SCHRIFTLICHEN QUELLEN UND DIE DARSTELLUNGEN IN DER GLYPTIK

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Journal of Ancient Civilizations 1999年 14卷 125-143页

作者： magnus Widell

Steroids reduce local inflammatory mediator secretion and mucosal permeability in collagenous colitis patients

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World Journal of Gastroenterology 2006年第43期12卷 7012-7018页

作者： Yesuf Taha Yngve Raab Marie Carlson Anders Larsson Mikael Lrdal Lars Lf magnus Thrn Departments of Medical Sciences University Hospital Uppsala Sweden Department of Medicine KarolinskaInstitutet Karolinska University Hospital Huddinge Sweden Departments of Medical Sciences University Hospital Uppsala Sweden Departments of Clinical Chemistry University Hospital Uppsala Sweden Department of Medicine KarolinskaInstitutet Karolinska University Hospital Huddinge Sweden Center for Clinical Research Central Hospital Vsters Sweden Department of Surgery Karolinska Institutet South Stockholm General Hospital Stockholm Sweden

AIM：. To study the effect of oral steroids upon clinical response and rectal mucosa secretion of eosinophil cationic protein （ECP）, myeloperoxidase （NPO）, basic fibroblast growth factor （bFGF）, vascular endothelial growth factor （VEGF） and albumin in patients with collagenous colitis （CC）. METHODS： A segmental perfusion technique was used to collect perfusates from rectum of CC patients once before and twice （one and four weeks） after the start of steroid treatment. Clinical data was monitored and ECP, MPO, bFGF, VEGF and albumin concentrations were analyzed by immunochemical methods in perfusates and in serum. RESULTS： Steroids reduced the number of bowel movements by more than five times within one week and all patients reported improved subjective wellbeing at wk 1 and 4. At the same time, the median concentrations of ECP, bFGF, VEGF and albumin in rectal perfusates decreased significantly. MPO values were above the detection limit in only 3 patients before treatment and in none during treatment. VEGF, bFGF, ECP and albumin concentrations correlated with each other with the exception of ECP and albumin. A decrease of serum ECP and VEGF concentrations was also seen even if the overtime reduction was not significant.CONCLUSION： Oral steroid treatment in CC patients induced a simultaneous reduction of bowel movements and rectal release of ECP, bFGF, VEGF and albumin, suggesting that these polypeptides and increased mucosal permeability are important components of the pathophysiology in collagenous colitis.

关键词： Collagenous colitis Inflammatory mediator Steroid treatment Eosinophil cationic protein Basicfibroblast growth factor Vascular endothelial growthfactor

Preparation of nanocrystalline Na_2ZrO_3 for high-temperature CO_2 acceptors:chemistry and mechanism

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Journal of Energy Chemistry 2013年第3期22卷 387-393页

作者： Tiejun Zhao magnus Rφnning De Chen Department of Chemical Engineering Norwegian University of Science and TechnologyN-7491 TrondheimNorway Low-Carbon Energy Conversion Center Shanghai Advanced Research InstituteChinese Academy of Sciences

Nanocrystalline Na2ZrO3 was demonstrated as a promising acceptor for CO2 capture at elevated temperatures. The mechanism of nanocrystalline Na2ZrO3 formation from the soft-chemistry route is elucidated by varying precursors, preparation methods, and calciantion temperatures, combining detailed characterizations by X-ray diffraction （XRD） and scanning electron microscope （SEM） at different steps in the process. The results revealed that the drying method such as spraying drying and simple evaporation-drying did not influence the final product prop- erties. However both Na and Zr precursors had remarkable influences on the Na2ZrO3 formation. The solid reaction of Na intermediate and nanocrystalline ZrO2 in the calcination was identified as the key step for the Na2ZrO3 formation, where the formation of molten phase Na intermediate was found to be crucial to facilitate the solid reaction. We provided principles for rational design of the chemistry for the Na2ZrO3 formation where the formation of Na intermediate with low melting points is essential. Pure nanocrystalline Na2ZrO3 can be synthesized from a mixture containing sodium nitrate and zirconoxy citrate via the formation of NaNO3 with low melting point. However, it is not possible to form pure nanocrystalline Na2ZrO3 at relatively low temperatures from the mixtures of NaAc/ZrO（NO3）2 or NaCA/ZrOC12 due to the formation of Na2CO3 and NaC1 with high melting points.

关键词： Na2ZrO3 CO2 capture spray drying calcinations nanocrystal

Alice Yao,The Ancient Highlands of Southwest China: From the Bronze Age to the Han ***:Oxford University Press,*** Fox Brindley,Ancient China and the Yue: Perceptions and Identities on the Southern Frontier,c.400 BCE-50 ***:Cambri

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浙江大学艺术与考古研究 2018年第1期 260-272页

作者： magnus Fiskesj Cornell University

Together as well as in and of themselves, these two new books represent a major contribution to research on the Southern reaches of the Chinese empire in ancient times. The sophisticated, in-depth treatment of relations between Chinese centers and southern peripheries is a welcome development that both supplements and illuminates research on the northern heartland of the Chinese empires.

关键词： Alice Yao,The Ancient Highlands of Southwest China Perceptions and Identities on the Southern Frontier,c.400 BCE-50 CE.Cambridge:Cambridge University Press,2015 CE

Kud-da MAY BE INNOCENT! AN UR III LAWSUIT DEALING WITH SHEEP ROBBERY REVISED

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Journal of Ancient Civilizations 2001年第1期16卷 31-36页

作者： magnus Widell IHAC