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Chinese Chemical Letters 2010年第2期21卷 171-174页

作者： Babak Mokhtari Roya Azadi Aseieh Azhdari Department of Chemistry College of ScienceShahid Chamran University

An efficient and mild method for the direct conversion of alcohols into N-alkylphthalimides using 2,4,6-trichloro-1,3,5-triazine and dimethylformamide was described.The reaction was preceded via(alcoxymethylene) dimet... 详细信息

关键词： Alcohol Potassium phthalimide 2 4 6-Trichloro-1 3 5-triazine dimethylformamide N-alkylphthalimide

Synthesis and Luminescence Properties of Ternary Europium Complexes inTitania Matrix in the Presence of dimethylformamide by a Sol-Gel Process

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Journal of Rare Earths 1999年第4期17卷 259-262页

作者：符连社张洪杰孟庆国王淑彬杨魁跃倪嘉缵 Key Laboratory of Rare Earth Chemistry and Physics Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China

In-situ synthesis of ternary europium complex with thenoyltrifluoacetone (TTA) and 1,10-phenanthroline (phen) in titania matrix in the presence of dimethylformamide (DMF) by a sol-gel process was described, which was confirmed by the luminescence excitation spectra and infrared spectra. The titania gel that contains europium complex exhibits Eu3+ characteristic emission bands and presents a longer fluorescence lifetime than the pure complexes dissolved in ethanol solution. The concentration effect on the luminescence intensity was also investigated.

关键词： rare earths sol-gel method in-situ synthesis titania dimethylformamide

Separation Performance of Sodium Alginate/Poly(Vinyl Pyrrolidone)Membranes for Aqueous/dimethylformamide Mixtures by Vapor Permeation and Vapor Permeation with Temperature Difference Methods

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Advances in Chemical Engineering and Science 2011年第4期1卷 305-312页

作者： Ebru Kondolot Solak Oya Sanli Department of Cemistry and Chemical Processing Technology Atatürk Vocational High SchoolGazi UniversityTeknikokullarAnkaraTurkey Faculty of Science Department of ChemistryGazi UniversityTeknikokullarAnkaraTurkey

In this study sodium alginate (NaAlg)/poly (vinyl pyrrolidone) (PVP) blend membranes were prepared and crosslinked with CaCl2 (0.1 Molarity (M)) for the separation of aqueous/dimethylformamide (DMF) mixtures. Membranes were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and their performance was examined by varying experimental parameters such as feed composition (0 - 100 wt%), operating temperature (30℃ - 50℃) and membrane thickness (30 - 90 micrometer (μm)). Blending NaAlg with PVP, decreased separation factor whereas increased the permeation rate as the permeation temperature was increased in Vapor Permeation (VP) and Vapor Permeation with Temperature Difference (TDVP) methods. In the TDVP method, the separation factors increased and the permeation rates decreased as the temperature of the membrane surrounding is decreased. The highest separation factor of 60 was obtained in TDVP method for 90 wt% DMF concentration in the feed.

关键词： Vapor Permeation Sodium Alginate dimethylformamide Membrane Poly(Vinyl Pyrrolidone)

Study on Electrodeposition of Gadolinium in (p-CH_3C_6H_4SO_3)_3Gd DMF Solution

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Rare Metals 2000年第1期19卷 65-69页

作者：刘鹏杨绮琴童叶翔杨燕生华南师范大学广东广州 510631 中山大学化学化工学院广东广州 510275

Gadolinium p toluenesulfonate highly soluble in organic solvent was prepared and was used as the electrolyte in DMF for the first time. The electrode process of the reduction of Gd(Ⅲ) to the Gd is irreversible studied by cyclic voltammetry, chronopotentiometry. A dense film of gadolinium with metallic luster was obtained by potentiostatic electrolysis. The transfer coefficient of electrode reaction Gd(Ⅲ)+3e=Gd and the diffusion coefficient of Gd(Ⅲ) were determined as 0.35 and 2.0×10 -7 cm 2s -1 at 25℃ respectively.

关键词： Gadolinium p toluenesulfonate dimethylformamide Electroreduction Electrodeposition

Controllable synthesis of polyoxometalates nanocubes and their specific interactions with prion proteins

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Science China Chemistry 2009年第12期52卷 2156-2160页

作者： LIANG WenTing HUANG ChengZhi MA Lu Key Laboratory of Luminescence and Real-time Analysis Ministry of EducationCollege of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China

It is found that Keggin-type of polyoxometalates nanocubes could be formed in aqueous medium under the adjustment of dimethylformamide (DMF),and could be changed from solid nanocubes to hollow ones with increasing temperature. Further investigations show that this Keggin-type of polyoxometalates nanocubes can specifically interact with prion protein,and the light scattering signals are en-hanced in proportion to the content of prion in the range of 3.36―840 ng·mL-1.

关键词： polyoxometalates nanocubes dimethylformamide light scattering spectrum prion protein Introduction

ELECTRODEPOSITION OF NEODYMIUM IN NEODYMIUM p-TOLUENESULFONATE-DMF

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中国有色金属学会会刊：英文版 1998年第4期8卷 146-151页

作者： Liu Peng, Yang Qiqin, Yang Yansheng and Tong Yexiang Faculty of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, P. R. China

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关键词： neodymium p toluenesulfonate dimethylformamide electroreduction of Nd(Ⅲ) electrodeposition of neodymium Nd Co Nd Ni film

New Convenient Synthesis of 8-C-Methylated Homoisoflavones and Analysis of Their Structure by NMR and Tandem Mass Spectrometry

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International Journal of Organic Chemistry 2021年第1期11卷 46-54页

作者： Santosh Kumar Yadav Department of Organic Chemistry & FDW Andhra University Visakhapatnam India DMPK Sai Life Sciences Ltd. Pune Maharashtra India

Homoisoflavonoids are in the subclass of the larger family of flavonoids having one more alkyl carbon than flavonoids. Among them, 8-C-Methylated homoisoflavones have not been extensively studied for synthesis and biological evaluation. Author’s current objective is to synthesize 8-C-Methylated homoisoflavones by the reaction of 3-C-methylated dihydrochalcones with N,N’-dimethyl (chloromethylene) ammonium chloride generated in situ from DMF and PCl5 for one carbon extension at about room temperature. The 3-C-methylated dihydrochalcones were synthesized by the reduction of 3-C-methylated chalcones, which were prepared from 3-C-methylated acetophenones and aromatic aldehydes in the presence of base. All the synthesized novel homoisoflavones’s structures were characterized by NMR and Tandem Mass Spectrometry.

关键词： 8-C-Methylated Homoisoflavones 3-C-Methylated Dihydrochalcones 3-C-Methylated Chalcones 3-C-Methylated Acetophenones dimethylformamide BF3·Et2O PCl5

Process for the Preparation of Chromones, Isoflavones and Homoisoflavones Using Vilsmeier Reagent Generated from Phthaloyl Dichloride and DMF

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International Journal of Organic Chemistry 2014年第4期4卷 236-246页

作者： Santosh Kumar Yadav Department of Organic Chemistry & FDW Andhra University Visakhapatnam India

Vilsmeier reagent formed from phthaloyl dichloride and DMF was found to be very effective for converting 2-hydroxyacetophenones, deoxybenzoins and dihydrochalcones into corresponding chromones, isoflavones and homoisoflavones with excellent yield. This method offers significant advantages such as efficiency and mild reaction conditions with shorter reaction time.

关键词： Phthaloyl Dichloride dimethylformamide Chromones Isoflavones Homoisoflavones BF3·Et2O Vilsmeier Reagent