搜索结果: 1-15 共查到“有机合成化学 Investigation”相关记录15条 . 查询时间(0.187 秒)
Density functional theory investigation of electrophilic addition reaction of chlorine to tricyclo[4.2.2.22,5]dodeca-1,5-diene
DFT calculations intrinsic reaction coordinates transannular reactions
2010/10/14
Potential energy surface (PES) of the tricyclo[4.2.2.22,5]dodeca- 1,5-diene (TCDD)-Cl2 system was studied by B3LYP/6-311+G(d,p) method and the configurations [reactants, molecular charge-transfer (CT)...
Investigation of the fuel properties of biodiesel produced over an alumina-based solid catalyst
Biodiesel fuel properties transesterification heterogeneous basic catalyst
2010/4/9
The present study investigated the transesterification process used in the production of canola oil methyl ester from canola oil and methanol over synthesized KF/Al2O3 catalysts. Different amounts of ...
Investigation of Solid State Synthesis and Characterizations of Novel Sodium Rare-Earth Oxyphosphates
Oxyphosphates Rare-earths Sodium Rare Earth Oxyphosphate Raman powder XRD SEM
2010/4/16
A new orthorhombic phase of Na2LaOPO4 (sodium lanthanum oxyphosphate), and novel Na2NdOPO4 (sodium neodymium oxyphosphate), Na2SmOPO4 (sodium samarium oxyphosphate) were synthesized by solid state rea...
Synthesis of Some Novel 3,5-Diaryl-1,2,4-Triazole Derivatives and Investigation of Their Antimicrobial Activities
Acyl hydrazone 1,2,4-triazole 1,3,4-oxadiazole Schiff base reduction acetylation antimicrobial activity antifungal activity
2010/4/16
A series of acylhydrazones (2a-d) was synthesized from the reactions of iminoester hydrochlorides (1a-e) with acyl hydrazines. 2,5-Dialkyl 1,3,4-oxadiazoles (3a-d) were obtained in the same reaction m...
Investigation of the Voltammetric Characteristics of Poly(1,4-diaminobenzene) Film as a Dopamine-Selective Polymer Electrode
Poly(1,4-diaminobenzene) dopamine ascorbic acid
2010/4/19
Electrochemical polymerization of 1,4-diaminobenzene in the KCl aqueous electrolyte at a potential of 0.600 V versus Ag/AgCl produces adherent poly(1,4-diaminobenzene) film on a gold electrode. The el...
Investigation of Some 1,3-Diols for the Requirements of Solvent Extraction of Boron: 2,2,6-Trimethyl-1,3 Heptanediol as a Potential Boron Extractant
1,3-Diols Solvent Extraction of Boron: 2,2,6-Trimethyl-1,3 Heptanediol
2010/4/19
Eighteen 1,3-diols were synthesized and their structure and distribution ratio for the solvent extraction of boron were studied. Diols with a high distribution ratio (D_{B(OH)_3 > 10) were investigate...
Investigation of the Cation Complexation by Macrocyclic Ethers using 13C NMR Spin--Lattice Dipolar Relaxation Time Measurements
Investigation the Cation Complexation Macrocyclic Ethers using 13C NMR Spin--Lattice Dipolar Relaxation
2010/4/19
The binding constants (Ka) of [18]crown-6 ether with Na+ , K+, and Ba2+ thiocyanates were determined by 13C{1H} NMR spin--lattice dipolar relaxation time measurements. The observed relaxation times (T...
Synthesis of Novel 4-Alkylidene- and 4-Alkylamino-5-oxo-4,5-Dihydro-[1,2,4] triazole Derivatives and Investigation of Their Antitumor Activities
Imine bond antitumor activity capron aldehyde cyclohexane carboxaldehyde 5-oxo-[1,2,4]triazole
2010/4/20
A series of novel 3-alkyl-4-cyclohexylmethylenamino-5-oxo-4,5-dihydro-[1,2,4]triazoles (6a-e) and 3-alkyl-4-hexylidenamino-5-oxo-4,5-dihydro-[1,2,4]triazoles (7b-e) were synthesized from the reaction ...
Bromination of 1-Cyclopent-1-en-1-ylbenzene and 1-(5-Bromocyclopent-1-en-1-yl)benzene and Theoretical Investigation of the Products
Bromination Olefins MM+ AM1 Hartree-Fock (HF) and Density Functional Theory (DFT) calculations
2010/4/21
The bromination of 1-cyclopent-1-en-1-ylbenzene (4) in different solvents and at different temperatures was accompanied by the evolution of hydrogen bromide and yielded 1-(5-bromocyclopent-1-en-1-yl)b...
An Investigation of the Interaction of 4-Membered Rings with Adjacent Carbanion Centers
Carbanions cyclobutylcarbinyl cyclopropylcarbinyl strained molecules
2010/4/22
A series of cyclobutylcarbinyl phenyl ketones was prepared and the rates of base catalyzed hydrogen-deuterium exchange of a -hydrogen atoms were compared with those of appropriate model compounds, to ...
Synthesis and Structure of Systems Containing Pyramidalized and Strained Double Bond: An Investigation on the Cycloaddition Reactions of cis- and trans-3,8-dicarbomethoxy-3,8-dihydroheptalene
Synthesis Structure of Systems Containing Pyramidalized Strained Double Bond An Investigation on the Cycloaddition Reactions of cis- trans-3,8-dicarbomethoxy-3,8-dihydroheptalene
2010/6/27
The cycloaddition reactions of cis-3,8-dicarbomethoxy-3,8-dihydroheptalene cis-2 and trans-3,8-dicarbomethoxy-3,8-dihydroheptalene trans-2 with various dienophiles such as dimethyl acetylenedicarboxyl...
Investigation of the Influence of Thiocarbamide in the Process of Carbamide Deparaffinization
carbamide deparaffinization isopropyl alcohol-water solution oil-products thiocarbamide hydrogen bonding infrared spectroscopy
2010/6/27
The influence of thiocarbamide in the process of carbamide dewaxing was investigated. The dependence of separated paraffins on the quantity of thiocarbamide was examined experimentally. It was determi...
An Investigation of the Formation Mechanism of Allene or Alkyne in the 6,7-Benzobicyclo[3.2.1]octane System by Deuterium Labeling Experiments
Cyclic allene Cyclic alkynes Deuterium Labeling
2010/6/28
In order to reveal the real intermediate in the base-promoted reaction of 1, 3-bromo-4,4-dideuterio-6,7-benzobicyclo[3.2.1]octa-2,6-diene 10 was synthesized and its HBr elimination reaction studied. R...
Potentiometric Investigation of the Effects of Several Substituents on the Basicity of Benzilidene-o-hydroxyaniline
Schiff bases nonaqueous media substituent effect potentiometric titration
2010/6/30
Chloro-, bromo-, iodo-, nitro-, methoxy- and hydroxy-substituted benzilidene-o-hydroxyaniline were prepared in order to investigate the effects of substituents on the basicity of benzilidene-o-hydroxy...
A Quantum-Chemical Investigation on 5,5'-BI(1H-1.2,4-Triazole))
Quantum-Chemical Investigation 5,5'-BI(1H-1.2,4-Triazole))
2010/8/15
The conformational analysis of flexible 5,5'-bi(1H-1,2,4-triazole) molecule containing various reaction centers has been performed by the semiempirical methods MNDO,AM1 and PM3, and the internal rotat...