scholarly journals Ultrasound Assisted Synthesis and Antimicrobial Evaluation of Novel Thiophene Chalcone Derivatives

2014 ◽  
Keyword(s):  
Chalcone Derivatives ◽  
Antimicrobial Evaluation ◽  
Ultrasound Assisted

scholarly journals Green ultrasound-assisted three-component click synthesis of novel 1H-1,2,3-triazole carrying benzothiazoles and fluorinated-1,2,4-triazole conjugates and their antimicrobial evaluation

2017 ◽  
Vol 67 (3) ◽  
pp. 309-324 ◽  
Author(s):  
Nadjet Rezki ◽  
Mohamed Reda Aouad
Keyword(s):  
Antimicrobial Activity ◽  
Cycloaddition Reaction ◽  
Dipolar Cycloaddition ◽  
Terminal Alkynes ◽  
One Pot ◽  
Alkyl Aryl ◽  
Antimicrobial Evaluation ◽  
Ultrasound Assisted ◽  
Click Synthesis

AbstractThe present study describes an efficient and ecofriendly, ultrasound, one-pot click cycloaddition approach for the construction of a novel series of 1,4-disubstituted-1,2,3-triazoles tethered with fluorinated 1,2,4-triazole-benzothiazole molecular conjugates. It involved three-component condensation of the appropriate bromoacetamide benzothiazole, sodium azide and 4-alkyl/aryl-5-(2-fluorophenyl)-3-(prop-2-ynylthio)-1,2,4-triazoles4a-ethrough a Cu(I)-catalyzed 1,3-dipolar cycloaddition reaction. This approach involvesin situgeneration of azidoacetamide benzothiazole, followed by condensation with terminal alkynes in the presence of CuSO4/Na-ascorbate in aqueous DMSO under both conventional and ultrasound conditions. Some of the designed 1,2,3-triazole conjugates6a-owere recognized for their antimicrobial activity against some bacterial and fungal pathogenic strains.

Antimicrobial evaluation and action mechanism of chalcone derivatives containing quinoxaline moiety

2019 ◽  
Vol 150 (7) ◽  
pp. 1325-1334 ◽  
Author(s):  
Rongjiao Xia ◽  
Tao Guo ◽  
Jun He ◽  
Mei Chen ◽  
Shijun Su ◽  
...  
Keyword(s):  
Action Mechanism ◽  
Chalcone Derivatives ◽  
Antimicrobial Evaluation

Ultrasound-assisted green bromination of N-cinnamoyl amino acid amides – Structural characterization and antimicrobial evaluation

2017 ◽  
Vol 1135 ◽  
pp. 144-152 ◽  
Author(s):  
Boyka Stoykova ◽  
Maya Chochkova ◽  
Galya Ivanova ◽  
Nadezhda Markova ◽  
Venelin Enchev ◽  
...  
Keyword(s):  
Amino Acid ◽  
Structural Characterization ◽  
Antimicrobial Evaluation ◽  
Ultrasound Assisted

Ultrasound assisted, VOSO4 catalyzed synthesis of 4-thiazolidinones: Antimicrobial evaluation of indazole-4-thiazolidinone derivatives

2017 ◽  
Vol 58 (49) ◽  
pp. 4632-4637 ◽  
Author(s):  
Srinivas Angapelly ◽  
P.V. Sri Ramya ◽  
Routhu SunithaRani ◽  
C. Ganesh Kumar ◽  
Ahmed Kamal ◽  
...  
Keyword(s):  
Antimicrobial Evaluation ◽  
Ultrasound Assisted

scholarly journals Ultrasound-assisted synthesis of dihydropyrimidine-2-thiones

2011 ◽  
Vol 76 (5) ◽  
pp. 679-684 ◽  
Author(s):  
Javad Safaei-Ghomi ◽  
Ali Ghasemzadeh
Keyword(s):  
High Efficiency ◽  
Chemical Processes ◽  
Structural Elucidation ◽  
Spectral Analyses ◽  
Chalcone Derivatives ◽  
Aryl Aldehydes ◽  
Ultrasound Assisted ◽  
High Yields ◽  
Ultrasonic Conditions ◽  
Ultrasound Effect

Chalcone derivatives were prepared by the condensation of various substituted aryl aldehydes and acetophenone in alkaline ethanol, while pyrimidine-2-thione derivatives were prepared by the combination of chalcones and thiourea under conventional and ultrasonic conditions. Advantages of the ultrasound effect were observed and high yields of the products were obtained after 20-30 min sonication. Characterization and structural elucidation of the products was realized based on chemical, analytical and spectral analyses. The results clearly demonstrated a high efficiency of the ultrasonic systems was achieved in the chemical processes.

Sign in / Sign up

Export Citation Format

Share Document