Proline-Catalyzed Simple and Efficient Synthesis of 1,8-Dioxo-decahydroacridines in Aqueous Ethanol Medium

2008 ◽  
Vol 39 (2) ◽  
pp. 228-241 ◽  
Author(s):  
K. Venkatesan ◽  
Suresh S. Pujari ◽  
Kumar V. Srinivasan
Keyword(s):  
Aqueous Ethanol ◽  
Efficient Synthesis ◽  
Ethanol Medium

Study on the Synthesis of Carboxymethylpachyman in the Aqueous-Ethanol Medium with the Assistance of Ultrasonics

2011 ◽  
Vol 236-238 ◽  
pp. 2810-2814
Author(s):  
Yong Jiang Wang ◽  
Xue Qian Wu ◽  
Shi Wang Liu ◽  
Yuan Feng Wu ◽  
Yan Ping Zhang
Keyword(s):  
Biological Activity ◽  
Aqueous Ethanol ◽  
Reaction Medium ◽  
Volume Ratio ◽  
Value Added ◽  
Poria Cocos ◽  
A Value ◽  
Ethanol Medium ◽  
Favorable Conditions ◽  
Carboxymethyl Pachyman

Water-insoluble β - ( 1 - 3 ) – D - glucan isolated from the sclerotium of Poria cocos hardly exhibits biological activity. Therefore, it is advantageous to produce a value-added product from Poria cocos. We extracted the β - ( 1 - 3 ) – D - glucan from the sclerotium of Poria cocos and synthesized a carboxymethylated derivative, carboxymethyl-pachyman (CMP). The influences on the degrees of substitution ( DS ) of CMP, for example, volume ratio of ethanol to water, [NaOH]/[MCA] ratio, reaction temperature and reaction time have been examined, respectively. The most favorable conditions for pachyman carboxymethylation are obtained with a [NaOH]/[MCA] ratio of 1.5, at 45°C for 60 minutes with a reaction medium consisting of a ethanol/water 80:20 (v/v) mixture.

Adsorption properties of manganese oxides prepared in aqueous-ethanol medium toward Sr(II) ions

2019 ◽  
Vol 321 (1) ◽  
pp. 243-253 ◽  
Author(s):  
A. I. Ivanets ◽  
V. V. Milutin ◽  
V. G. Prozorovich ◽  
T. F. Kouznetsova ◽  
N. A. Nekrasova
Keyword(s):  
Manganese Oxides ◽  
Aqueous Ethanol ◽  
Adsorption Properties ◽  
Ethanol Medium

scholarly journals A facile and efficient synthesis of 1,8-dioxodecahydroacridines derivatives catalyzed by cobalt–alanine metal complex under aqueous ethanol media

BMC Chemistry ◽  
2019 ◽  
Vol 13 (1) ◽  
Author(s):  
M. Mujahid Alam ◽  
Ahmed T. Mubarak ◽  
Mohammed A. Assiri ◽  
S. Merajuddin Ahmed ◽  
Ahmed M. Fouda
Keyword(s):  
Metal Complex ◽  
Aqueous Ethanol ◽  
Efficient Synthesis

Conductance Study of Benzyl Bromide Reaction with Cyclicamines in Aqueous-Ethanol Medium

2018 ◽  
Vol 7 (3.3) ◽  
pp. 143
Author(s):  
Veerati Radhika ◽  
. .
Keyword(s):  
Electrostatic Interactions ◽  
Mixed Solvent ◽  
Aqueous Ethanol ◽  
Benzyl Bromide ◽  
Frontier Molecular Orbital ◽  
Orbital Interactions ◽  
R Factor ◽  
Ethanol Medium ◽  
Solvation Of Ions ◽  
Homo Lumo

Nucleophilic substitution reaction of benzyl bromide and cyclicamines in ethanol aqueous intermediate reactivity can suggest that the nucleophile increases through their pKa values. A linear correlation exists between computed values of the dipole moment, rate and electronegativity of the nucelophiles. The two reactants suggest that frontier molecular orbital interactions ion-solvation and correlation of time with the HOMO-LUMO breach of that the reaction.  But it is not orbital controlled as well as forbidden by the electrostatic interactions along with mixed solvent composition between the reactants. The influence on the solvation of ions before reaction has been discuss with facilitate by R-factor. Thermodynamic properties are evaluate and report. The consequences of the learning to be interpreted in terms of ion-solvent exchanges and solvent properties comparing with electrostatic interaction between the reactants.   

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