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	1. Corrosion inhibition of the new quaternary ammonium salts derivative with 8-Hydroxyquinoline on copper in 0.5M H2SO4 solution
	Lei Zulei,TAN Bochuan,QIN Zhongjian,JIANG Lu,XIANG Bin
	Chemistry 02 May 2018
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	Abstract:In this study, four kinds of ionic liquids (ILs) with different carbon chain lengths based on 8-Hydroxyquinoline have been synthesized and used as the corrosion inhibitions for copper in 0.5 M sulfuric acid solution. The data of impedance spectroscopy, polarization curves and scanning electron microscope (SEM) show a positive correlation relationship between inhibitor concentration and inhibition efficiency. Besides, the introduction of alkyl groups in the molecular structure contributes to slow down the corrosion of copper, and inhibition efficiency rises firstly and then declines with the incremental alkyl chain length. The theoretical calculation result is consistent with the abovementioned experiments results. Furthermore, the adsorption of the investigated inhibitors on the copper surface obeys the Langmuir adsorption isotherm.
	TO cite this article:Lei Zulei,TAN Bochuan,QIN Zhongjian, et al. Corrosion inhibition of the new quaternary ammonium salts derivative with 8-Hydroxyquinoline on copper in 0.5M H2SO4 solution[OL].[ 2 May 2018] http://en.paper.edu.cn/en_releasepaper/content/4744754


	2. Asymmetric Phase-Transfer-Catalyzed 1,6-Conjugate Addition of Thiols to in situ Generated para-Quinone Methides
	ZHOU Lei,FAN Yajing,LI Shen
	Chemistry 03 May 2017
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	Abstract:A catalytic asymmetric 1,6-conjugate addition of thiols to in situ generated para-quinone methides has been developed, affording a range of optically active benzyl thioethers in excellent yields and enantioselectivities. The use of para-hydroxybenzyl sulfones as precursors for the formation of transient p-QM intermediates allows to overcome the limitations in substrate scope.
	TO cite this article:ZHOU Lei,FAN Yajing,LI Shen. Asymmetric Phase-Transfer-Catalyzed 1,6-Conjugate Addition of Thiols to in situ Generated para-Quinone Methides[OL].[ 3 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4732205

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	3. Aerobic Oxidative Approach to pyrrolo[1,2-a]quinoxalines
	LI Yun,WANG Chao,ZHAI Hongbin
	Chemistry 13 July 2016
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	Abstract:We have developed an environmentally benign and practical protocol for the synthesis of pyrrolo[1,2-a]quinoxalines, which represent ubiquitous structural units common to a number of biologically active compounds. This synthetic system features simple operation and using clean oxidant, as well as mild reaction conditions. Both aromatic and aliphatic aldehydes can be used for the reaction and the products were obtained in good to excellent yields.
	TO cite this article:LI Yun,WANG Chao,ZHAI Hongbin. Aerobic Oxidative Approach to pyrrolo[1,2-a]quinoxalines[J].


	4. Concise Total Synthesis of the Bisnorditerpene (+)-rel-(5b,8a,10a)-8-hydroxy-13-methylpodocarpa-9(11),13-diene-3,12-dione
	XU Shiyan,ZHANG Mingjie,XIE Xingang,SHE Xuegong
	Chemistry 26 February 2016
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	Abstract:The bisnorditerpene rel-(5b,8a,10a)-8-hydroxy-13-methylpodocarpa-9(11),13-diene-3,12-dione (1) was isolated from Croton regelianus var. matosii, popularly known as 'velame de cheiro', which is used as traditional medicine in 'Caatinga', Northeast region of Brazil, in 2010 by Pessoa et al. Bisnorditerpene 1 has larvicidal, nematicidal, in vitro and in vivo antitumor properties. It has a 6-6-6 ring pattern, three chiral carbons, and two partial structures, including a 1,4-quinoid moiety with a chiral hydroxy and a decalin-type system containing a carbonyl group and three angular methyl groups. The first asymmetric concise total synthesis of the bisnorditerpene(+) (1) has been accomplished in 7 steps with 18.5% yield. The key steps of the synthesis include a cationic domino cyclization to construct the core skeleton and an oxidative dearomatization to form the 1,4-quinoid moiety of this natural product.
	TO cite this article:XU Shiyan,ZHANG Mingjie,XIE Xingang, et al. Concise Total Synthesis of the Bisnorditerpene (+)-rel-(5b,8a,10a)-8-hydroxy-13-methylpodocarpa-9(11),13-diene-3,12-dione[OL].[26 February 2016] http://en.paper.edu.cn/en_releasepaper/content/4679025


	5. Mechanistic Studies of Rh(III)-Catalyzed C-H Olefination of Pyridines and Quinolines Promoted by Cu(OAc)2
	ZHOU Jun,ZHANG Shuo-Qing,LI Bo,SHI Bing-Feng
	Chemistry 01 December 2015
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	Abstract:Detailed investigations towards the mechanistic studies of our previous work on Rh(III)-catalyzed C-H olefination of pyridines and quinolines are reported here. A working hypothesis was proposed for based on experimental and computional studies. The key reaction intermediate 11a was isolated and determined by X-ray crystallography, displaying a dimeric copper coordinated at the pyridine nitrogen. The KIE studies indicates that the cleavage of the C-H bond was not involved in the rate-determining step. The DFT calculations show the orientation of -CO- benefits its function as a directing group and promoted the following reaction. In addtion, controlled experiments have also been conducted. These studies indicate that Cu(OAc)2 might serve as both a convenient oxidant and Lewis acid.
	TO cite this article:ZHOU Jun,ZHANG Shuo-Qing,LI Bo, et al. Mechanistic Studies of Rh(III)-Catalyzed C-H Olefination of Pyridines and Quinolines Promoted by Cu(OAc)2[OL].[ 1 December 2015] http://en.paper.edu.cn/en_releasepaper/content/4665182


	6. Efficient pyrido[1,2-a]benzimidazole formation from 2-aminopyridines and cyclohexanones under metal-free conditions
	Xie Yanjun,Chen Xiangui,Deng Guojun
	Chemistry 16 September 2015
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	Abstract:An efficient procedure for pyrido[1,2-a]benzimidazole preparation from 2-aminopyridines and cyclohexanones under metal-free conditions is described. Iodine could smoothly mediate this kind of transformation without the aid of metal catalyst. Oxygen was used as an environmentally benign oxidant to give the corresponding products in good to high yields. The reaction showed good substrate scope and various functional groups such alkyl, ester, and halogens were well tolerated under the optimized reaction conditions. This method affords an efficient approach for biologically active nitrogen-containing heterocycles using non-aromatic cyclohexanones as the aryl source.
	TO cite this article:Xie Yanjun,Chen Xiangui,Deng Guojun. Efficient pyrido[1,2-a]benzimidazole formation from 2-aminopyridines and cyclohexanones under metal-free conditions[OL].[16 September 2015] http://en.paper.edu.cn/en_releasepaper/content/4655112


	7. Silver-catalyzed Regio-selective Phosphonylation Reaction of Indoles
	ZHANG Yanqin,MIN Zehui,DONG Wanrong,PENG Zhihong,AN Delie
	Chemistry 31 May 2015
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	Abstract:A new approach towards 2-phosponylated indoles was herein reported. The oxidative methodology took place selectively in a dehydrogenative coupling manner, furnishing the 2-substituted indoles as the exclusive product in moderate to good yields. The yield was depressed by the addition of TEMPO (2,2,6,6-tetramethyl piperidine 1-oxide), indicating the reaction proceed through the radical pathway.
	TO cite this article:ZHANG Yanqin,MIN Zehui,DONG Wanrong, et al. Silver-catalyzed Regio-selective Phosphonylation Reaction of Indoles[OL].[31 May 2015] http://en.paper.edu.cn/en_releasepaper/content/4645759


	8. An Investigation on Imine Formation Mechanism of Cyclohexanone and Benzylamine with DFT Study: Significant p-Chloro-Substituted and Metal-Assisted Effects
	Ruofeng Huang,Xiaohui Zhang,Yan Xiong
	Chemistry 23 April 2015
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	Abstract:The imine formation mechanism has been investigated using density functional theory at the B3LYP/6-31G* level. The geometries, energies and frequencies of all stationary points were calculated. Our results indicate quantitively that imine formation mechanism proceeds via nucleophilic attack and water elimination, and metal-assisted imine formation only involves nucleophilic attack to ion pair interaction. From the rate-determining step, p-chloro-benzylamine lows energy barrier by 1.1 kJ/mol, which delivers easier imine formation theoretically and accords with experimental description. The imine formation assisted by titanium tetrachloride and zinc dichloride reduces activation energies to 35.6 and -27.0 kJ/mol, respectively, which suggests higher yield.
	TO cite this article:Ruofeng Huang,Xiaohui Zhang,Yan Xiong. An Investigation on Imine Formation Mechanism of Cyclohexanone and Benzylamine with DFT Study: Significant p-Chloro-Substituted and Metal-Assisted Effects[OL].[23 April 2015] http://en.paper.edu.cn/en_releasepaper/content/4639978


	9. Concise Total Synthesis of (±)-Aspidospermidine
	SHE Xuegong,MA Haichen,XIE Xingang,ZHANG weiwei
	Chemistry 29 December 2014
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	Abstract:Aspidosperma alkaloids, which comprise more than 250 members, share a common pentacyclic skeleton imbedded in an indoline substructure and many of which have significant biological activities. The unique structure and diverse bioactivities of Aspidosperma alkaloids have attracted much attention of the synthetic community for many years and have remained a focus on extensive research activities to present day. Aspidospermidine (1) was isolated from the leaves and skin of Apocynaceae plants and contains a typical skeleton of indole alkaloids. It also exhibits significantly respiratory stimulant and antibiotic activities. The fundamental structure has been the primary target for most of the efforts toward Aspidosperma alkaloids syntheses and has served as the ideal test case for recent developed synthetic strategies. In this paper (±)-Aspidospermidine (1) has been synthesized from the commercially available 2,3-dihydro-1H-carbazol-4(9H)-one 6 in 10 steps with 20% overall yield. Key step of the strategy is a one-pot carbonyl reduction / iminium formation / intramolecular conjugate addition reaction that may be applied for synthesis of other kind of Aspidosperma alkaloids.
	TO cite this article:SHE Xuegong,MA Haichen,XIE Xingang, et al. Concise Total Synthesis of (±)-Aspidospermidine[OL].[29 December 2014] http://en.paper.edu.cn/en_releasepaper/content/4625889


	10. Iron-Catalyzed Friedel-Crafts Allylation of Aromatics with Allylic Alcohols and Acetate
	HE Chao,ZHANG Shuting,XIONG Yan
	Chemistry 19 March 2014
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	Abstract:Iron-catalyzed allylation of aromatics with allylic alcohols and acetate is presented. FeCl3•6H2O has proved to be an effective catalyst for this transformation. A variety of aromatic compounds are coupled with allylic reagents to furnish the corresponding 1, 3-disubstituted propenes in moderate to high yields under mild conditions. The catalytic cycle mechanism as a Friedel-Crafts process is illustrated in the assistance of ultraviolet spectrum analysis
	TO cite this article:HE Chao,ZHANG Shuting,XIONG Yan. Iron-Catalyzed Friedel-Crafts Allylation of Aromatics with Allylic Alcohols and Acetate[OL].[19 March 2014] http://en.paper.edu.cn/en_releasepaper/content/4590759

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