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Visible-light photoredox-mediated oxidation of N-methyl tertiaryamines under catalyst free conditions:Direct synthesis of methylene-bridged bis-1,3-dicarbonyl compounds

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Chinese Chemical Letters 2014年第4期25卷 545-548页

作者： xiao-Jun Dai xiao-liang xu Dong-Ping Cheng xiao-Nian Li Institute of Industrial Catalysis College of Chemical Engineering and Materials ScienceZhejiang University of Technology College of Pharmaceutical Science Zhejiang University of Technology

Mediated by visible light-induced photoredox catalysis and free of other catalysts, a new and efficient synthesis of methylene-bridged bis-l,3-dicarbonyl derivatives has been developed. A variety of N-methyl tertiarya... 详细信息

关键词： Photochemistry Oxidation Aliphatic tertiaryamine Catalyst free

Reductive Cleavage of the Se-Se Bond by the Sm-CdCl_2-HMPA System: A New One-Pot Method for the Synthesis of Selenoesters

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Chinese Chemical Letters 1999年第12期10卷 987-988页

作者： xiao liang xu Ping LU Yong Min ZHANG Department of Chemistry Zhejiang University(Xixi campus)Hangzhou 310028

Treatment with Sin-CdCI2-HMPA system, dibenzyl and diphenyl diselenides react withacyl handes and acid anhydrides in one-pot to give corresponding selenoesters in good yields undermild and neutral conditions.

关键词： Samarium cadmium choloride diselenide selenoester.

Design and Synthesis of 3-(1-Phenylethyl)thiazolidine-2-thione Derivatives with Potential Biological Activities

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Chemical Research in Chinese Universities 2011年第3期27卷 431-434页

作者： LI Hong-xin CHEN xiao-tao xu liang-zhong College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 P. R. China

A series of novel neonicotinoids derivatives 4a―4p was designed and synthesized by introducing the ethylbenzene group into the thiazole ring, their structures were confirmed by IR, 1H NMR and elemental analysis. The ... 详细信息

关键词： Crystal structure Design Neonicotinoids derivatives Thiacloprid

The Reductive Addition Reaction of Substituted 2-Chloromethyl-1,3,4-oxadiazole to Aldehydes and Ketones Promoted by Samarium Diiodide

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Chinese Chemical Letters 2005年第12期16卷 1566-1568页

作者： xiao liang xu Wei Min ZHU Yong Min ZHANG Department of Chemistry Zhejiang University Xixi Campus Hangzhou 310028 State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032

1-（β-Hydroxyalkyl）-l,3,4-oxadiazole derivatives were synthesized via reductive addition reactions of 2-chloromethyl-l,3,4-oxadiazole with carbonyl compounds under mild conditions promoted by SmI2.

关键词： Reductive addition samarium diiodide 1-(β-hydroxyalkyl)-1 3 4-oxadiazole deriva-tives synthesize

Synthesis of carbon-supported Pd/SnO_2 catalyst for highly selective hydrogenation of 2,4-difluoronitrobenzene

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Chinese Chemical Letters 2014年第8期25卷 1137-1140页

作者： Jia Zhao Lei Ma xiao-liang xu Feng Feng xiao-Nian Li Industrial Catalysis Institute of Zhejiang University of Technology

Halogenated anilines have a wide range of applications in the production of pharmaceuticals and agrochemical substances, and thus it is of great importance to develop highly active and selective catalysts for the hydrogenation of halogenated nitrobenzenes. We approach this challenge by probing noble metal/non-noble metal oxide nanoparticles（NPs） catalysts. Carbon-supported Pd/SnO2catalysts were synthesized by the chemical reduction method, and their catalytic activity was evaluated by the hydrogenation reaction of 2,4-difluoronitrobenzene（DFNB） to the corresponding 2,4-difluoroaniline（DFAN）, showing a remarkable synergistic effect of the Pd and SnO2 NPs. The as-prepared Pd/SnO2/C catalysts were characterized using TEM, XRD, H2 TPD and XPS techniques. Modifications to the electronic structure of the Pd atoms through the use of SnO2 led to the suppression of the hydrogenolysis of the C–F bond and the acceleration of nitrosobenzene（DFNSB） conversion and consequently, resulted in the inhibition of the formation of reactive by-products and may be responsible for the enhancements observed in selectivity.

关键词： Tin dioxide Palladium Selective hydrogenation 2.4-Difluoronitrobenzene

Synthesis,structural characterization and solubility of 2-(1-substituted-1,11-undecylidene)-5-arylimino-△~3 -1,3,4-thiadiazolines

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Chinese Chemical Letters 2009年第11期20卷 1267-1270页

作者： Shu Hui Jin xiao Mei liang xu Yang Fu Heng Chen Dao Quan Wang Key Laboratory of Pesticide Chemistry and Application Technology Department of Applied Chemistry China Agricultural University Beijing 100193 China

A series of novel 2-（1-substituted-1,11-undecylidene）-5-arylimino-△^3-1,3,4-thiadiazolines （4） were synthesized and their structure was characterized by ^1H NMR, ^13C NMR and elemental analysis. Their solubility in both polar and non-polar solvents is significantly improved owing to the introduction of ethyl or methylthio group at cyclododecyl ring as compared with parent compounds [1, 2-（1,11-undecylidene）-5-arylimino-△^3-1,3,4-thiadiazolines]. However, their fungicidal activity against Rhizoctonia solani is less than that of parent compounds. X-ray diffraction analysis of a representative compound （4d） showed that the conformation of 12-membered ring is still [3333], in which the ethyl group present at the side-exo position and the thiadiazoline ring at the comer carbon. The thiadiazoline plane is perpendicular to the cyclododecyl one.

关键词： 2-(1-Substituted-1,11-undecylidene)-5-arylimino-△^3-1,3,4-thiadiazoline Solubility Crystal structure Synthesis

Au@SiO2 @CuInS2–ZnS/Anti-AFP fluorescent probe improves HCC cell labeling

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Hepatobiliary & Pancreatic Diseases International 2019年第3期18卷 266-272页

作者： Yi-Wen Dai Li-Xin Zhu Yan Zhang Shu-Hui Wang Kui Chen Tong-Tong Jiang xiao-liang xu xiao-Ping Geng Division of General Surgery The Second Affiliated Hospital of Anhui Medical University Hefei 230601 China Division of General Surgery The First Affiliated Hospital of Anhui Medical University Hefei 230022 China Key Laboratory of Strongly-Coupled Quantum Matter Physics Chinese Academy of Sciences School of Physical Sciences University of Science and Technology of China Hefei 230026 China Department of Physics Anhui University Hefei 230020 China

Background: Clear tumor imaging is essential to the resection of hepatocellular carcinoma(HCC). This study aimed to create a novel biological probe to improve the HCC imaging. Methods: Au nano-flower particles and CuInS2 –Zn S core-shell quantum dots were synthesized by hydrothermal method. Au was coated with porous SiO2 and combined with anti-AFP antibody. HCC cell line HepG2 was used to evaluate the targeting efficacy of the probe, while flow cytometry and MTT assay were used to detect the cytotoxicity and bio-compatibility of the probe. Probes were subcutaneously injected to nude mice to explore light intensity and tissue penetration. Results: The fluorescence stability of the probe was maintained 100% for 24 h, and the brightness value was 4 times stronger than that of the corresponding CuInS2 –Zn S quantum dot. In the targeting experiment, the labeled HepG2 emitted yellow fluorescence. In the cytotoxicity experiments, MTT and flow cytometry results showed that the bio-compatibility of the probe was fine, the inhibition rate of HepG2 cell with 60% Cu-QDs/Anti-AFP probe and Au-QDs/Anti-AFP probe solution for 48 h were significantly different(86.3%±7.0% vs. 4.9%±1.3%, t = 19.745, P < 0.05), and the apoptosis rates were 83.3%±5.1% vs. 4.4%±0.8%( P < 0.001). In the animal experiment, the luminescence of the novel probe can penetrate the abdominal tissues of a mouse, stronger than that of CuInS2 –ZnS quantum dot. Conclusions: The Au@SiO2 @CuInS2 –ZnS/Anti-AFP probe can targetedly recognize and label HepG2 cells with good bio-compatibility and no toxicity, and the strong tissue penetrability of luminescence may be helpful to surgeons.

关键词： Plasmon enhancement Quantum dots Nanoparticle Luminescence Cytotoxicity

A New Reformatsky Type Reaction Via Cadmium Salt In Aqueous Media

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Chinese Chemical Letters 1999年第9期10卷 729-730页

作者： xiao liang xu Ping LU Yong Min ZHANG(Department of Chemistry, Zhejiang University (Xixi campus). Hangzhou 310028) Zhejiang Univ Dept Chem Hangzhou 310028 Peoples R China

In the presence of cadmium (II) chloride-metallic samarium, alpha-bromoacetophenone reacts with aldehydes in THF -H2O under mild conditions to give beta-hydroxy ketones in good yields.

关键词： synthesis samarium Reformatsky-type reaction beta-hydroxy ketone

Alternative technique to save ischemic bowel segment in management of neonatal short bowel syndrome: A case report

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World Journal of Clinical Cases 2019年第20期7卷 3353-3357页

作者： Lei Geng Lei Zhou Guo-Jian Ding xiao-liang xu Yu-Mei Wu Ji-Jun Liu Ting-liang Fu Department of Pediatric Surgery Binzhou Medical University HospitalBinzhou 256603Shandong ProvinceChina Department of Hepatobiliary Surgery Binzhou Medical University HospitalBinzhou 256603Shandong ProvinceChina Department of Neonatology Binzhou Medical University HospitalBinzhou 256603Shandong ProvinceChina Department of Anorectal Surgery Binzhou Medical University HospitalBinzhou 256603Shandong ProvinceChina

BACKGROUND Congenital short bowel syndrome(SBS)associated with malrotation,gut volvulus and jejuno-ileal atresia is a very rare *** is a severe challenge for surgeons to preserve residual ischemic bowel segment in the management of short bowel syndrome,especially in *** SUMMARY We report a newborn baby with gut malrotation associated with jejuno-ileal atresia,congenital SBS and jejunal *** and abdominal distention were *** laparotomy,malrotation associated with jejuno-ileal atresia,congenital SBS and jenunal volvulus was *** total length of the small bowel was 63 cm with proximal jejunal bowel segment measuring 38 cm,including 18 cm necrotic segment below the Treitz’s ligament and 20 cm severe ischemic *** distal part of the small bowel was 25 cm in length and only about 0.8 cm in ***’s procedure,necrotic segment resection and end-to-back duodeno-ileal anastomosis were *** residual severe ischemic jejunum was preserved with single proximal stoma and distal end *** months later,to restore the continuity of the isolated gut segment,end-to-end duodeno-jejunal and jejuno-ileal anastomosis was *** entire functional small bowel length increased to 80 *** fluid therapy and parenteral nutrition were discontinued on the 10th day *** months later,her body weight was 9.5 *** Isolation of severe ischemic bowel segment and staged anastomosis to restore the gut continuity for infants with SBS are safe and feasible.

关键词： Ischemic bowel segment Short bowel syndrome Bowel isolation technique Staged salvaging procedure Case report