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Photoinduced reaction of potassium alkyltrifluoroborates,sulfur dioxide and para-quinone methides via radical 1,6-addition

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Chinese Chemical Letters 2021年第11期32卷 3535-3538页

作者： Min Yang Huiqi Han Hui Jiang shengqing ye Xiaona Fan Jie Wu Department of Forensic Science Collaborative Innovation Center for Gannan Oil-tea Camellia Industrial DevelopmentGannan Medical UniversityGanzhou 341000China School of Pharmaceutical and Materials Engineering Taizhou UniversityTaizhou 318000China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of SciencesShanghai 200032China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

A photoinduced reaction of potassium alkyltrifluoroborates,sulfur dioxide,and para-quinone methides under visible light irradiation at room temperature is developed,giving rise to diarylmethyl alkylsulfones in moderate to good *** reaction works well under photocatalysis with a broad substrate scope by using DABCO·(SO_(2))_(2)as the source of sulfur *** study shows that this transformation is initiated by alkyl radicals generated in situ from potassium alkyltrifluoroborates in the presence of *** subsequent insertion of sulfur dioxide and radical 1,6-addition of para-quinone methides with alkylsulfonyl radical intermediates afford the corresponding diarylmethyl alkylsulfones.

关键词： Potassium alkyltrifluoroborate para-Quinone methide Sulfur dioxide Radical 1,6-addition Visible light irradiation

A photocatalytic radical relay reaction of 2-methylthiolated phenylalkynones and potassium metabisulfite

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Organic Chemistry Frontiers 2022年第2期9卷 450-455页

作者： Yuyan Liu Xinyi Zhang Jiajing Lv Chao Zhang Xiaotong Chang shengqing ye Jie Wu School of Pharmaceutical and Materials Engineering&Institute for Advanced Studies Taizhou University1139 Shifu AvenueZhejiang 318000China State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic ChemistryChinese Academy of Sciences345 Lingling RoadShanghai 200032China School of Chemistry and Chemical Engineering Henan Normal UniversityXinxiang 453007China

The generation of methylsufonyl-containing thioflavones through a radical relay reaction of methylthiolated phenylalkynones and potassium metabisulfite in the presence of a catalytic amount of sodium methylsulfinate as an initiator under photoinduced conditions is *** photocatalytic reaction proceeds smoothly with good functional group tolerance under visible light *** mechanistic investigations indicate that this reaction occurs through a radical relay pathway.

关键词： radical potassium smoothly

4-取代的汉斯酯(Hantzsch Esters)作为烷基化试剂参与的有机反应

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化学学报 2019年第9期77卷 814-831页

作者：叶盛青吴劼台州学院医药化工与材料工程学院台州318000 复旦大学化学系上海200438 中国科学院上海有机化学研究所金属有机化学国家重点实验室上海200032

汉斯酯(Hantzsch Esters)在1881年被合成以来一直被用作还原剂参与加氢还原反应,近年来科学家发现4-取代的汉斯酯可以发生碳碳键断裂而发生烷基迁移反应.随后大量以4-取代的汉斯酯类化合物作为烷基化试剂的反应被报道出来,科学家发现这... 详细信息

汉斯酯(Hantzsch Esters)在1881年被合成以来一直被用作还原剂参与加氢还原反应,近年来科学家发现4-取代的汉斯酯可以发生碳碳键断裂而发生烷基迁移反应.随后大量以4-取代的汉斯酯类化合物作为烷基化试剂的反应被报道出来,科学家发现这类烷基化反应的历程主要是烷基自由基的迁移历程.随着近年自由基化学的快速发展,为这类新型烷基化试剂的应用发展提供了有力基础.本文按照该烷基化试剂参与的反应类型分类,进行简单介绍.

关键词： 4-取代汉斯酯 1,4-二氢吡啶自由基烷基化

镍催化链取代N-磺酰胺与末端烯烃的氢烷基化反应

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有机化学 2021年第12期41卷 4841-4843页

作者：叶盛青吴劼台州学院医药化工与材料工程学院台州318000

由于烯烃在过渡金属催化的官能团转化反应中的高效性以及实用性,这类化合物被认为是构建复杂结构的饱和脂肪族化合物的重要合成前体.近些年来通过过渡金属镍催化烯烃的氢芳基化、氢烯基化以及氢烷基化反应为烯烃的转化拓展了新的方向[1]... 详细信息

由于烯烃在过渡金属催化的官能团转化反应中的高效性以及实用性,这类化合物被认为是构建复杂结构的饱和脂肪族化合物的重要合成前体.近些年来通过过渡金属镍催化烯烃的氢芳基化、氢烯基化以及氢烷基化反应为烯烃的转化拓展了新的方向[1].在这类转化中,烯烃的氢烷基化反应相比于其他两类反应,可以为合成多手性中心的饱和脂肪族化合物提供更多的机会.

关键词：脂肪族化合物官能团转化芳基化烷基化反应多手性中心催化烯烃过渡金属催化镍催化

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胃肠道间质瘤48例临床诊治探讨

临床医学工程 2012年第2期19卷 205-207页

作者：叶胜青张勇江苏大学附属医院普外科江苏镇江212001

目的探讨胃肠道间质瘤的临床诊断和治疗方法。方法回顾性分析我科收治的48例患者的病史资料及病理结果。结果 48例临床表现均无特异性,行CT、内镜、腹部超声等检查发现肿瘤,其中位于胃32例,空肠、回肠10例,十二指肠2例,结肠2例,直肠1例... 详细信息

目的探讨胃肠道间质瘤的临床诊断和治疗方法。方法回顾性分析我科收治的48例患者的病史资料及病理结果。结果 48例临床表现均无特异性,行CT、内镜、腹部超声等检查发现肿瘤,其中位于胃32例,空肠、回肠10例,十二指肠2例,结肠2例,直肠1例,肠系膜1例,均行外科手术治疗,CD117阳性率为91.7%(44/48),CD34表达阳性率为75%(36/48)。结论胃肠道间质瘤临床表现无明显特异性,术前明确诊断较为困难,目前手术仍是唯一有效的治疗方式,伊马替尼的应用可以改善预后。

关键词：胃肠道间质瘤诊断外科治疗

高流量呼吸湿化治疗急性心力衰竭患者的心功能及血氧指标变化

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中国医药指南 2024年第36期22卷 37-40页

作者：叶盛清郑冬银孙红丽宁德市中医院重症医学科宁德352100 宁德市中医院急诊科宁德352100

目的分析急性心力衰竭患者应用高流量呼吸湿化治疗的医学价值。方法回顾性收集分析2022年1月—6月在宁德市中医院接受传统鼻导管氧疗的40例急性心力衰竭患者资料,将其命名为对照组,再回顾性收集分析2022年7月至2023年1月在我院接受了高... 详细信息

目的分析急性心力衰竭患者应用高流量呼吸湿化治疗的医学价值。方法回顾性收集分析2022年1月—6月在宁德市中医院接受传统鼻导管氧疗的40例急性心力衰竭患者资料,将其命名为对照组,再回顾性收集分析2022年7月至2023年1月在我院接受了高流量呼吸湿化治疗的40例急性心力衰竭患者资料,将其命名为观察组。对比两组治疗前后的心功能指标、血氧情况、血压情况。结果治疗前,两组患者HR、LVEF、NT-proBNP、CTnI等心功能指标、PaO_(2)、PaCO_(2)、SpO_(2)、pH值等血氧指标、SBP、DBP等血压指标差异无统计学意义(P>0.05)。治疗后,观察组心功能、血氧指标、血压指标均优于对照组(P<0.05)。结论在急性心力衰竭患者的治疗中应用高流量呼吸湿化治疗可提高氧疗浓度增加肺部通气,尽早改善呼吸困难,同时减少二氧化碳潴留,能改善机体pH值以及血氧指标,利于心肌损伤标志物水平降低,改善心功能。

关键词：高流量呼吸湿化治疗急性心力衰竭患者心功能血氧指标变化血压指标氧疗

Effect of cholesterol metabolism on hepatolithiasis

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World Journal of Gastroenterology 2025年第1期31卷 157-162页

作者： Lin Zheng Zi-Yu ye Jun-Ji Ma Department of Gastroenterology The Second Hospital of Hebei Medical UniversityHebei Key Laboratory of GastroenterologyHebei Institute of GastroenterologyHebei Clinical Research Center for Digestive DiseasesNo.215 Heping West RoadShijiazhuang 050000Hebei ProvinceChina

Surgical intervention is currently the primary treatment for hepatolithiasis;how-ever,some patients still experience residual stones and high recurrence rates after *** metabolism seems to play an important role in hepatoli-thiasis pathogenesis.A high cholesterol diet is one of the significant reasons for the increasing incidence of ***,regular diet and appropriate medical intervention are crucial measures to prevent hepatolithiasis and reduce recurrence rate after *** dietary cholesterol and drugs that increase cholesterol stone solubility are key therapeutic approaches in treating *** article discusses the cholesterol metabolic pathways related to the pathogenesis of hepatolithiasis,as well as food intake and targeted therapeutic drugs.

关键词： Hepatolithiasis Cholesterol metabolism High-fat diet 3-hydroxy-3-methylglutaryl-coenzyme A reductase Interlobular bile duct

Three-dimensional fracture of UO2 ceramic pellets by phase field modeling

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 169-180页

作者： Wei Xiong Xuan ye Hongzhang Cheng Xiaoming Liu Institute of Nuclear and New Energy Technology Collaborative Innovation Center of Advanced Nuclear Energy Technology Key Laboratory of Advanced Reactor Engineering and Safety of Ministry of Education Tsinghua University State Key Laboratory of Nonlinear Mechanics Institute of Mechanics Chinese Academy of Sciences School of Engineering Science University of Chinese Academy of Sciences

Fracture is the primary failure type for the UO2ceramic pellets,which are operated under irradiation and thermal processes,and physically confined by the *** this work,by combining closely coupled physical processes of heat conduction,heat transfer,and mechanical deformation with the cohesive phase field framework,we proposed a high-precision modeling of quasistatic cracking of three-dimensional （3D） UO2ceramic fuel pellets under high temperature and *** simulation results agree well with the experimental results,indicating that the proposed method has the potential to capture 3D crack modes in the interested time ***,we studied the relation of the 3D fracture patterns of fuel pellets with the peak power *** was found that the power level plays a critical role in determining the competition between radial and circumferential cracks,as well as transverse penetrating cracks.

关键词： phase field method nuclear fuel pellet coupled thermo-mechanical model thermal fracture

Prussian Blue Analogue‑Templated Nanocomposites for Alkali‑Ion Batteries:Progress and Perspective

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Nano-Micro Letters 2025年第1期17卷 216-261页

作者： Jian‑En Zhou Yilin Li Xiaoming Lin Jiaye ye Key Laboratory of Theoretical Chemistry of Environment Ministry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006People’s Republic of China School of Chemistry and Physics Faculty of ScienceQueensland University of Technology2 George StreetBrisbaneQLD 4000Australia Centre for Materials Science Queensland University of Technology2 George StreetBrisbaneQLD 4000Australia

Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion batteries(AIBs)including sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs).Owing to larger ion sizes of Na^(+)and K^(+)compared with Li^(+),nanocomposites with excellent crystallinity orientation and well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium *** enticing open rigid framework structures,Prussian blue analogues(PBAs)remain promising self-sacrificial templates for the preparation of various nanocomposites,whose appeal originates from the well-retained porous structures and exceptional electrochemical activities after thermal *** review focuses on the recent progress of PBA-derived nanocomposites from their fabrication,lithium/sodium/potassium storage mechanism,and applications in AIBs(LIBs,SIBs,and PIBs).To distinguish various PBA derivatives,the working mechanism and applications of PBA-templated metal oxides,metal chalcogenides,metal phosphides,and other nanocomposites are systematically evaluated,facilitating the establishment of a structure–activity correlation for these *** on the fruitful achievements of PBA-derived nanocomposites,perspectives for their future development are envisioned,aiming to narrow down the gap between laboratory study and industrial reality.

关键词： Prussian blue analogues Self-sacrificial template Lithium-ion batteries Sodium-ion batteries Potassium-ion batteries