检索结果-南通市图书馆

Chinese Journal of Catalysis 2017年第3期38卷 469-474页

作者： arash ghorbani-choghamarani Zahra Taherinia 伊拉姆大学理学院化学系伊朗伊拉姆69315516

Peptide nanofibers decorated with palladium nanoparticles catalyzed direct coupling of aryl halides with hydroxybenzotriazole to afford the corresponding biaryls in good to excellent *** coupling reactions proceeded under simple,green,and mild *** peptide nanofibers were used as recyclable supports in the coupling *** approach is the first to use hydroxybenzotriazole as a phenylating agent.

关键词： Peptide nanofiber Hydroxybenzotriazole Biaryl PEG Palladium

Synthesis and characterization of a Pd(0) Schiff base complex anchored on magnetic nanoporous MCM-41 as a novel and recyclable catalyst for the Suzuki and Heck reactions under green conditions

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2017年第8期38卷 1413-1422页

作者： Mohsen Nikoorazm Farshid ghorbani arash ghorbani-choghamarani Zahra Erfani Department of Chemistry Faculty of Science Ilam University P. O. Box69315516 Ilam Iran Department of Environment Faculty of Natural Resource University of Kurdistan Sanandaj 66177‐15177 Iran

A Pd Schiff base complex was immobilized onto the surface of magnetic MCM‐41(Fe3O4@MCM‐41@Pd(0)‐P2C)as a novel,eco‐friendly,and recyclable heterogeneous nanocatalyst and fully characterized by FT‐IR,VSM,EDS,transmission electron microscopy,scanning electron microscopy,thermogravimetric analyses,ICP‐OES,and X‐ray powder diffraction *** Fe3O4@MCM‐41@Pd(0)‐P2C was investigated as a catalyst for the one‐pot Suzuki and Heck reactions in PEG as a green solvent to provide the target products in excellent *** main advantages of using this catalyst include a short reaction time,green reaction conditions,a simple experimental procedure,non‐use of hazardous organic solvents,low loading of the catalyst,and the ability to use various *** importantly,the catalyst could be easily separated from the reaction mixture with the assistance of an external magnet and could be recovered and reused several times without significant loss of stability and activity.

关键词： MCM‐41 Magnetic nanoparticles Suzuki reaction Heck reaction Polyethylene glycol (PEG) Palladium

2-(Sulfooxy)propane-1,2,3-tricarboxylic acid as novel and versatile catalyst for the formylation of alcohols and amines using ethyl formate under neat conditions

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2012年第4期23卷 450-453页

作者： arash ghorbani-choghamarani Ziba Akbaripanah Department of Chemistry Faculty of ScienceIlam UniversityP.O.Box 69315516IlamIran

2-（Sulfooxy）propane-1,2,3-tricarboxylic acid（supported on silica gel） has been introduced as novel and green catalyst for the formylation of alcohols and amines with ethyl formate,as mild formylation agent,under n... 详细信息

关键词： Alcohol Amine 2-(Sulfooxy)propane-1 2 3-tricarboxylic acid Formylation Ethyl formate

Three component reactions: An efficient and green synthesis of 3, 4-dihydropyrimidin-2-(1H)-ones and thiones using silica gel-supported L-pyrrolidine-2-carboxylic acid-4-hydrogen sulfate

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2013年第9期24卷 804-808页

作者： arash ghorbani-choghamarani Parisa Zamani Department of Chemistry Faculty of Science Ilam University

An environmentally benign aqueous protocol for the synthesis of 3,4-dihydropyrimidin-2-（ 1 H）-ones and thiones promoted by a green catalyst, silica gel-supported L-pyrrolidine-2-carboxylic acid-4-hydrogen sulfate, has been developed. The use of nontoxic, thermally stable and inexpensive amino acid catalyst makes the process simple with minimal amount of chemical waste. Compared with classical Biginelli reaction conditions, this new method has the advantages of high yields and simple workup procedures.

关键词： 3 4-Dihya ropyrimldin-2 -( 1H)-ones(DHPMs)L-Pyrrolidine-2 -carboxylic acid-4-hydrogensulfateOne-potThree-component

Poly(4-vinylpyridinium tribromide) as metal-free,green and recoverable oxidizing polymer for the chemoselective oxidation of sulfides into sulfoxides

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2011年第1期22卷 114-118页

作者： arash ghorbani-choghamarani Mina Abbasi Department of Chemistry Faculty of ScienceIlam UniversityP.O.Box 69315516IlamIran Islamic Azad University Science and ResearchBranch-AhvazAhvazIran

Poly（4-vinylpyridinium tribromide） was prepared from poly（4-vinylpyridin） and used for the selective oxidation of a variety of sulfides to the corresponding sulfoxides. The oxidation reaction was carried out heter... 详细信息

关键词： Poly(4-vinylpyridinium tribromide) Poly(4-vinylpyridin) Sulfide Sulfoxide Oxidation

A novel catalytic method for the regeneration of carbonyl compounds from oximes using aluminum nitrate and NaBr as catalyst

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2010年第9期21卷 1083-1086页

作者： arash ghorbani-choghamarani Javad Zeinivand Department of Chemistry Faculty of ScienceIlam UniversityP.O.Box 69315516IlamIran

A wide variety of aldoximes and ketoximes were regenerated to corresponding carbonyl compounds with Al（NO3）3·9H2O in presence of catalytic amounts of NaBr in CH2Cl2 at room temperature.

关键词： Deoximation Aluminum nitrate[Al(NO3)3·9H2O] NaBr Oximes

An effcient,rapid and facile procedure for conversion of aldoximes to nitriles using triphenylphosphine and N-halo sulfonamides

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2013年第12期24卷 1123-1126页

作者： Ramin ghorbani-Vaghei Lotf Shiri arash ghorbani-choghamarani Department of Organic Chemistry Faculty of ChemistryBu-Ali Sina University Department of Chemistry Faculty of SciencesIlam University

N,N,N＇,N＇-Tetrabromobenzene-1,3-disulfonamide （TBBDA）/triphenylphosphine and N,N,N＇,N＇-tetra- chlorobenzene-1,3-disulfonamide （TCBDA）/triphenylphosphine have been introduced as highly efficient systems for the versatile conversion of aldoxime derivatives into nitriles. The process reported here is operationally simple and reactions have been mildly performed in dichloromethane at room temperature.

关键词： Aldoxime Nitrile N N N' N'-Tetrabromobenzene-1 3- disulfonamide N N N' N'-Tetrachlorobenzene-1 3- disulfonamide Triphenylphosphine (PPh3)

Polyvinylpolypyrrolidonium tribromide as new and metal-free catalyst for the formylation and trimethylsilylation of hydroxyl group

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2011年第10期22卷 1207-1210页

作者： arash ghorbani-choghamarani Hamid Goudarziafshar Parisa Zamani Department of Chemistry Faculty of ScienceIlam UniversityP.O.Box 69315516 Ilam.Iran

Trimethylsilylation of alcohols was achieved using 1,1,1,3,3,3-hexamethyldisilazane（HMDS） as silylating agent,in the presence of polyvinylpolypyrrolidonium tribromide in acetonitrile at room *** a variety of alcohols were converted into alkyl formates by ethyl formate and a catalytic amount of polyvinylpolypyrrolidonium tribromide under solvent free conditions at room temperature.

关键词： Polyvinylpolypyrrolidone Polyvinylpolypyrrolidonium tribromide Formylation Silylation Ethyl format 1 1 1 3 3 3-Hexamethyl-disilazane(HMDS)

One-pot and novel route for the synthesis of 4-substituted-1,2,4-triazolidine-3,5-diones

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2014年第3期25卷 451-454页

作者： arash ghorbani-choghamarani Mohsen Nikoorazm Gouhar Azadi Department of Chemistry Faculty of ScienceIlam University

The efficient and one-pot synthesis of 4-substituted-l,2,4-triazolidin-3,5-dione derivatives （4- substituted urazoles） via combination of triphosgene, substituted anilines, and ethyl carbazate in the presence of ces... 详细信息

关键词： UrazoleTriphosgeneAnilineEthyl carbazateCesium carbonate

Mononitration of phenol derivatives by guanidinium nitrate and silica sulfuric acid under mild conditions

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2011年第12期22卷 1431-1434页

作者： arash ghorbani-choghamarani Hamid Goudarziafshar Mohsen Nikoorazm Zahra Naseri Department of Chemistry Faculty of ScienceIlain UniversityP.O.Box 69315516IlamIran

A mixture of guanidinium nitrate and silica sulfuric acid acts as mild and heterogeneous media for the efficient mono nitration of phenolic compounds in dichloromethane at room temperature.

关键词： Nitration Phenol Heterogeneous Guanidinium nitrate Silica sulfuric acid