scholarly journals A Sustainable Method for the Synthesis of Acetic Acid Based on Dehydrogenation of an Ethanol-Water Solution Catalyzed by an Iridium Complex Bearing a Functional Bipyridonate Ligand

ChemCatChem ◽  
2018 ◽  
Vol 10 (17) ◽  
pp. 3614-3614
Author(s):  
Masato Kuwahara ◽  
Masaaki Nishioka ◽  
Masato Yoshida ◽  
Ken-ichi Fujita
Keyword(s):  
Acetic Acid ◽  
Water Solution ◽  
Iridium Complex

THE ACTION OF ANILINE ON GLUCOSE IN WATER SOLUTION IN THE PRESENCE OF ACETIC ACID

1932 ◽  
Vol 7 (3) ◽  
pp. 237-247 ◽  
Author(s):  
C. N. Cameron ◽  
G. H. Guest
Keyword(s):  
Acetic Acid ◽  
Water Solution ◽  
Acid Yield ◽  
Water Solutions ◽  
Amorphous Precipitate

It was found that water solutions of glucose, aniline and acetic acid yield a brown amorphous precipitate. Further, this precipitate was produced as a result of the preliminary formation of glucose-anilide and then by the further action of acetic acid on the anilide.The amount and speed of formation of glucose-anilide (produced in the solution of glucose, aniline and acetic acid) were found to increase to a marked extent with increase in the concentration of aniline and acetic acid.Evidence for the conversion of the stable amylene-oxide glucose-anilide to the more reactive glucose anil was obtained.Attempts to separate the colored material into different fractions and to identify them are described.

A Computational Study on Iridium‐Catalyzed Production of Acetic Acid from Ethanol and Water Solution

2019 ◽  
Vol 37 (9) ◽  
pp. 883-886 ◽  
Author(s):  
Xin Yue ◽  
Longfei Li ◽  
Pengjie Li ◽  
Chenguang Luo ◽  
Min Pu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Computational Study ◽  
Water Solution

scholarly journals Detoxification Properties of Guanidinylated Chitosan Against Chemical Warfare Agents and Its Application to Military Protective Clothing

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1461 ◽  
Author(s):  
Woong Kwon ◽  
Euigyung Jeong
Keyword(s):  
Acetic Acid ◽  
Cotton Fabric ◽  
Protective Clothing ◽  
Water Solution ◽  
Chemical Warfare Agents ◽  
Treatment Method ◽  
Chemical Warfare Agent ◽  
Chemical Warfare ◽  
Warfare Agents ◽  
First Time

This study investigates the detoxification properties of guanidinylated chitosan against chemical warfare agents and its application to the preparation of military protective clothing. Guanidinylated chitosan was synthesized by chitosan guanidinylation with cyanamide. The detoxification properties of the guanidinylated chitosan were then evaluated using a chemical warfare agent simulant, called diisopropylfluorophosphate (DFP). Cotton fabric was treated with 1 wt.% of guanidinylated chitosan in acetic acid and water solution using the simple and conventional textile treatment method of pad–dry–cure. The detoxification properties of the guanidinylated chitosan-treated cotton fabric were evaluated to investigate the application of guanidinylated chitosan to the preparation of military protective clothing. Subsequently, 71.3% of DFP was hydrolyzed to non-hazardous diisopropylhydrogenphosphate (DHP) in 2 h because of the base organocatalytic activity of 0.02 g guanidinylated chitosan itself. Moreover, 60.1% of DFP was hydrolyzed by the catalytic activity of the guanidinylated chitosan-treated cotton fabric, which contained only 0.0002 g of guanidinylated chitosan. This result shows that the guanidinylated chitosan itself has detoxification properties for hydrolyzing DFP to DHP, and its detoxification properties can be more efficient when applied to cotton fabric because it showed 84.3% of the detoxification properties with only 1 wt.% of guanidinylated chitosan. For the first time, this study shows that guanidinylated chitosan has considerable detoxification properties and can be used as an agent to prepare protective clothing.

One-Pot Synthesis of Functionalised 4-Spiro-1,4-Dihydropyridines Via [1+2+1+2]-Cyclisation

2017 ◽  
Vol 41 (9) ◽  
pp. 513-516 ◽  
Author(s):  
Pan Zhou ◽  
Biao Hu ◽  
Lingling Lu ◽  
Rong Huang ◽  
Fuchao Yu
Keyword(s):  
Acetic Acid ◽  
Ammonium Acetate ◽  
Water Solution ◽  
Reaction Conditions ◽  
One Pot ◽  
Efficient Approach ◽  
H Nmr ◽  
Three Component Reaction ◽  
C Nmr ◽  
Operational Simplicity

A simple and efficient approach for the synthesis of 4-spiro-1,4-DHP derivatives has been developed, involving one-pot three-component reaction of isatins, N,N-dimethylenaminones with ammonium acetate in EtOH–water solution promoted by acetic acid. Compared with the previous [1+2+3]-cyclisation method, this [1+2+1+2]-cyclisation procedure has advantages as it is more environmentally friendly, has easier operational simplicity, and requires milder reaction conditions. Moreover, these novel compounds have been obtained in moderate to good yields and their structures have been confirmed by 1H NMR, 13C NMR and IR and HRMS spectroscopy.

scholarly journals Acetic acid Effect on Seedling Growth of Some Anoxia-tolerant Land Race Rice (Oryza sativa L) Genotypes

2010 ◽  
pp. 35-43
Author(s):  
JK Biswas ◽  
ASM Tareq Khan ◽  
R Yasmeen ◽  
MS Rahman
Keyword(s):  
Acetic Acid ◽  
Seedling Growth ◽  
Water Solution ◽  
Leaf Growth ◽  
In Vitro Study ◽  
Hypoxic Condition ◽  
Leaf Length ◽  
Coleoptile Length ◽  
Land Race

An in vitro study was conducted to observe the effect of acetic acid in the process of seedling growth of five anoxia-tolerant land race rice genotypes (Tepi boro, Chaita boro, Bashful, Jahmir and Banajira) under hypoxic condition at two pH levels: pH 5 and pH 7. The acetic acid concentrations were 0, 4, 8 and 12 mM. Seedlings were grown in the test tubes containing 18 ml acetic acid-water solution (equivalent to 50 mm water column above the seed) under the two pH conditions at 30 °C for 7 days in dark. The nature and extent of the genotype responses varied with the concentrations of acetic acid and pH levels. Increased acetic acid concentration affected coleoptile length, mesocotyl length, 1st leaf length and root length significantly. The genotype Bashful was able to produce the longest 1st leaf length at pH 5. The 1st leaf growth of genotype Jahmir varied a little with the pH levels used in this study. Higher pH (pH 7) appeared to minimize acetic acid shock of the seedlings in the process of development.

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