scholarly journals Optical properties and fluorescence quenching of carbazole containing (D–π–A) push–pull chromophores by silver nanoparticles: a detailed insight via an experimental and theoretical approach

RSC Advances ◽  
2017 ◽  
Vol 7 (14) ◽  
pp. 8402-8414 ◽  
Author(s):  
Abdullah M. Asiri ◽  
Osman I. Osman ◽  
Saad H. Al-Thaqafy ◽  
Salman A. Khan

(4Z)-4-[(9-Ethyl-9H-carbazol-3-yl)methylidene]-2-phenyl-1,3-oxazol-5(4H)-one (ECPO) was prepared by the one-pot multi-component reaction of 9-ethyl-9H-carbazole-3-carbaldehyde, hippuric acid, anhydrous sodium acetate and acetic anhydride under microwave irradiation.

RSC Advances ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 5191-5195 ◽  
Author(s):  
Mohamed Fares ◽  
Patrick M. McCosker ◽  
Muhammad A. Alsherbiny ◽  
Anthony C. Willis ◽  
Timothy Clark ◽  
...  

Convergent and convenient regioselective synthesis of novel thiazolo[2,3-a]pyrimidines was accomplished using the one-pot reaction of 6-ethylthiouracil, bromoacetic acid, anhydrous sodium acetate, acetic anhydride, acetic acid and suitable aldehyde.


2021 ◽  
Author(s):  
Yi-Nan Zhang ◽  
Zheng Li ◽  
Suriguga Meng ◽  
Alideertu Dong ◽  
Ying-Wei Yang

Carboxylated leaning tower[6]arene sodium salts are used as an efficient stabiliser for the one-pot synthesis of silver nanoparticles. The resulting hybrid material with good dispersion, excellent stability and narrow size...


2017 ◽  
Vol 41 (13) ◽  
pp. 5893-5903 ◽  
Author(s):  
Zeba Nasir ◽  
Abad Ali ◽  
Mohammad Shakir ◽  
Rizwan Wahab ◽  
Shamsuzzaman Shamsuzzaman ◽  
...  

Heterogeneous and versatile NiO–SiO2 NCs were synthesized by a sol–gel technique and used as a catalyst for the one-pot multicomponent synthesis of benzodiazepines.


Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 38
Author(s):  
Fernando J. Lorenzo ◽  
Romina A. Ocampo ◽  
Sandra D. Mandolesi

We present here a new proposal for the “one pot” generation of new 4-thiazolidinones (9a–e) through a multicomponent reaction under microwave irradiation conditions, using aromatic and heteroaromatic amines (8a–e), absolute ethanol as a “green” solvent and modifying the aldehyde group in the glycosidic residue, synthesized from D-mannitol. The study is focused in the variation of the irradiation times and the concentration of thioglycolic acid in order to study the possibility of controlling the structure and/or stereochemistry of the products formed in the reaction. Thiazolidinones 9a–d were obtained with a 69–82% The generation of the corresponding reaction products were monitored by TLC and CG-MS, taking reaction aliquots. The conditions reaction proved to be chemoselective depending on the excess of acid and irradiation times.


2017 ◽  
Vol 7 (3) ◽  
pp. 521-529 ◽  
Author(s):  
Munish Kumar ◽  
Rajni Bala ◽  
Vijay Singh Gondil ◽  
D. V. S. Jain ◽  
Sanjay Chhibber ◽  
...  

2013 ◽  
Vol 9 ◽  
pp. 467-475 ◽  
Author(s):  
Silvia M Soria-Castro ◽  
Alicia B Peñéñory

S-aryl thioacetates can be prepared by reaction of inexpensive potassium thioacetate with both electron-rich and electron-poor aryl iodides under a base-free copper/ligand catalytic system. CuI as copper source affords S-aryl thioacetates in good to excellent yields, by using 1,10-phenanthroline as a ligand in toluene at 100 °C after 24 h. Under microwave irradiation the time was drastically reduced to 2 h. Both procedures are simple and involve a low-cost catalytic system. This methodology was also applied to the “one-pot” synthesis of target heterocycles, such as 3H-benzo[c][1,2]dithiol-3-one and 2-methylbenzothiazole, alkyl aryl sulfides, diaryl disulfides and asymmetric diaryl sulfides in good yields.


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