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alkylamine-mediated synthesis and photocatalytic properties of ZnO

Frontiers of Materials Science 2019年第1期13卷 33-42页

作者： Cuicui HU Huanhuan ZHANG Yanjun XING Key Laboratory of Science and Technology of Eco-Textiles(Ministry of Education) College of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China Shanghai Institute of Quality Inspection and Technical Research Shanghai 200233China

A simple approach to synthesize ZnO microstructures was reported using dodecylamine,hexadecylamine and oleylamine as template *** synthesized ZnO was characterized by XRD,FESEM,TEM,EDS mapping,FTIR,UV-vis DRS,Raman spectroscopy and BET *** oriented ZnO microstructures were *** photocatalytic performance of ZnO prepared with different types of alkylamines was evaluated by the degradation of methylene blue(MB)and methyl orange(MO).The results suggested that alkylamine control the nucleation,growth and morphology of *** photocatalytic properties of ZnO on the degradation of MB and MO decreased with increasing the alkyl chain length in alkylamine.

关键词： ZnO controlled preparation alkylamine photocatalytic property

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Radical Carbonylation under Low CO Pressure:Synthesis of Esters from Activated alkylamines at Transition Metal-Free Conditions

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Chinese Journal of Chemistry 2021年第4期39卷 927-932页

作者： Fengqian Zhao Han-Jun Ai Xiao-Feng Wu Leibniz-Institut fur Katalyse e.V.an der Universitat Rostock Albert-Einstein-Straße 29a18059 RostockGermany Dalian National Laboratory for Clean Energy Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalianLiaoning116023 China

Main observation and conclusion High CO pressure(>40 bar)is usually needed in radical carbonylation reactions in the absence of metal *** this communication,we developed a transition-metal-free radical carbonylation of activated alkylamines with phenols and alcohols under low CO pressure(1-6 bar).Various esters were obtained in moderate to excellent yields under simple reaction conditions with good functional group compatibility.

关键词： Carbonylation Radical Ester alkylamine Katritzky salt

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Deoxygenative alkylation of tertiary amides using alkyl iodides under visible light

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Science China Chemistry 2022年第11期65卷 2231-2237页

作者： Feng Zhao Feng Jiang Xiaoming Wang The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials College of Chemistry and Materials ScienceShanghai Normal UniversityShanghai 200234China State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China School of Chemistry and Materials Science Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhou310024China

It is an unceasing goal for organic chemists to develop new catalytic methodologies for functional group transformations of widespread molecular structures. Amides are readily available from simple and reliable reactions, which are common structural units found in biologically active compounds. Consequently, they are attractive to be exploited in amine synthesis by reductive cross coupling. However, deoxygenative functionalization of amides is a long-standing challenge owing to the inertness of the resonance-stabilized amide C=O bond. In this work, a deoxygenative alkylation strategy was demonstrated, which combines amides and alkyl iodides to build structurally diverse tertiary alkylamines in a single step. Compared with previous deoxygenative alkylation of amides using organometallic reagents as functional partner, this work uses stable and easily available alkyl halides as functionalization reagents. The versatile and flexible strategy plus structural and functional diversity of readily available amides and alkyl iodides renders it highly appealing for the streamlined synthesis of tertiary amines and would be of much interest in areas such as pharmaceutical and agrochemical research.

关键词： deoxygenative alkylation amide transformation alkyl radical alkylamine visible light

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Comparative study on the inhibiting mechanism of inhibitor with primary amine groups and quaternary ammonium groups for sodium bentonite

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Petroleum 2023年第4期9卷 526-533页

作者： Gang Xie Yujing Luo Chenglong Wang Mingyi Deng Yang Bai State Key Laboratory of Oil&Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu610500China CNOOC Ltd. Zhanjiang524057China

Shale hydration and swelling is the main obstacle to the development of shale gas utilizing water-based drilling fluids(WBDFs).In this work,the inhibition mechanism of alkylammonium inhibitor and alkylamine inhibitor adsorbed on sodium bentonite(Na+Bent)are investigated using infrared spectroscopy(FT-IR),scanning electron microscopy(SEM),X-ray diffraction(XRD),zeta potential,particle size distribution tests,and thermogravimetry analysis(TGA).The results suggest that HTB and HMD can be inserted into the interlamination of Na+Bent and minimize the basal spacing compared to hydrated Na+*** and HMD are inserted between the Na+Bent layers in a single-layer tiled manner and replace the sodium ions that are firmly fixed between the ***,water molecules are removed from the interlayer Na+*** interaction between the quaternary ammonium group and Na+Bent is more significant than between the primary amine group and Na+*** inhibition performance suggests that HTB inhibits Na+Bent hydration and swelling more substantially than other inhibitors,indicating that the inhibition performance of the two quaternary ammonium groups is greater than that of the two primary amine ***,HTB can be used as intercalation inhibition in WBDFs and has tremendous application value.

关键词： Sodium bentonite Alkylammonium alkylamine Inhibition performance

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Carbamate synthesis from amines and dialkyl carbonate over inexpensive and clean acidic catalyst—Sulfamic acid

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Chinese Chemical Letters 2010年第7期21卷 794-797页

作者： Bo Wang Jing He Run Cang Sun Institute of Biomass Chemistry and Technology College of Material Science and TechnologyBeijing Forestry UniversityBeijing 100083China State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhou 510640China

Sulfamic acid has been proved to be the most efficient and recyclable catalyst in carbamate synthesis from alkylamine and dialkyl *** selectivity,cost-efficiency and simple product separation were the advantageous features obtained in this *** acid could be reused several times and keep its initial activity in the recycle *** addition,sulfamic acid has also exhibited the potential catalytic ability for alkylation of aromatic amines.

关键词： Sulfamic acid Acidic catalysis Carbamate alkylamine Dimethyl carbonate

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