Rapid microwave-assisted synthesis of hybrid zeolitic–imidazolate frameworks with mixed metals and mixed linkers

2017 ◽  
Vol 5 (13) ◽  
pp. 6090-6099 ◽  
Author(s):  
Febrian Hillman ◽  
John M. Zimmerman ◽  
Seung-Min Paek ◽  
Mohamad R. A. Hamid ◽  
Woo Taik Lim ◽  
...  
Keyword(s):  
Microwave Assisted Synthesis ◽  
Zeolitic Imidazolate Frameworks ◽  
Metal Centers ◽  
Mixed Metal ◽  
Microwave Assisted ◽  
Synthetic Strategy

Herein we report a new microwave-assisted synthetic strategy to rapidly prepare hybrid zeolitic–imidazolate frameworks (ZIFs): ZIFs with mixed metal centers and/or mixed linkers.

scholarly journals Green, Microwave-Assisted Synthesis of O-Perbutyrylated-Alkyl-Glycosides

Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 42
Author(s):  
Emmanuel Pérez-Escalante ◽  
Luis Guillermo González-Olivares ◽  
Araceli Castañeda-Ovando ◽  
Verónica Salazar-Pereda ◽  
John F. Trant ◽  
...  
Keyword(s):  
Lewis Acids ◽  
Model Compound ◽  
Traditional Approach ◽  
Reaction Times ◽  
Conventional Heating ◽  
Microwave Assisted Synthesis ◽  
Hydroxyl Groups ◽  
Alkyl Glycosides ◽  
Microwave Assisted ◽  
Synthetic Strategy

Chemical synthesis of carbohydrates is a challenging task. Several protection and deprotection steps of hydroxyl groups are required to ensure regioselective formation of the glycosidic bond. Usually, it is achieved through acylation, where conventional heating is combined with addition of Lewis acids as catalysts. This traditional approach has two drawbacks; it is time consuming and often catalysts are hazardous to the environment. An alternative route relies on application of microwaves and/or other Lewis acids with less or no toxicity. Such combination would reduce reaction times and offer a benign synthetic strategy to obtain peracylated compounds. The current work describes an efficient and environmentally mild synthesis of peracylated glycosides with potential application in enzymatic preparation of carbohydrates. Model compound O-perbutyrylated-phenyl-galactose was synthesized using imidazole as catalyst in the microwave-assisted process. The acylation protocol was optimized, and the target sugar was obtained at 50% yield after 1 h. In conclusion, the combination of imidazole and microwaves provides an excellent alternative to swiftly synthesize peracylated glycosides in a benign way.

Microwave Assisted Synthesis of Cationic Amino Sugar Surfactants

2020 ◽  
Vol 57 (3) ◽  
pp. 265-272
Author(s):  
Priya S. Singh ◽  
Aizaz Shaikh ◽  
Aditi Deshmukh ◽  
Amit P. Pratap
Keyword(s):  
Amino Sugar ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

Pyrrole: Chemical Synthesis, Microwave Assisted Synthesis, Reactions and Applications: A Review

2013 ◽  
Vol 17 (20) ◽  
pp. 2279-2304 ◽  
Author(s):  
Shrinivas Joshi ◽  
Uttam More ◽  
Venkatrao Kulkarni ◽  
Tejraj Aminabhavi
Keyword(s):  
Chemical Synthesis ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Synthesis Reactions

Microwave assisted synthesis of novel Pyrazole derivatives and their biological evaluation as anti-bacterial agents

2020 ◽  
Vol 23 ◽  
Author(s):  
Hadis Khodadad ◽  
Farhad Hatamjafari ◽  
Khalil Pourshamsian ◽  
Babak Sadeghi
Keyword(s):  
Antibacterial Activity ◽  
Aromatic Aldehydes ◽  
Catalytic Amount ◽  
Antibacterial Activities ◽  
Structural Features ◽  
Biological Evaluation ◽  
Aureus Strain ◽  
Microwave Assisted Synthesis ◽  
Pyrazole Derivatives ◽  
Microwave Assisted

Aim and Objective: Microwave-assisted condensation of acetophenone 1 and aromatic aldehydes 2 gave chalcone analogs 3, which were cyclized to pyrazole derivatives 6a-f via the reaction with hydrazine hydrate and oxalic acid in the presence of the catalytic amount of acetic acid in ethanol. Materials and Methods: The structural features of the synthesized compounds were characterized by melting point, FT-IR, 1H, 13C NMR and elemental analysis. Results: The antibacterial activities of the synthesized pyrazoles was evaluated against three gram-positive bacteria such as Enterococcus durans, Staphylococcus aureus, Bacillus subtilis and two gram-negative bacteria such as Escherichia coli and Salmonella typhimurium. Conclusion: All the synthesized pyrazoles showed relatively high antibacterial activity against S. aureus strain and none of them demonstrated antibacterial activity against E. coli.

Microwave Assisted Synthesis: A New Technology in Drug Discovery

2009 ◽  
Vol 9 (3) ◽  
pp. 340-358 ◽  
Author(s):  
V. Santagada ◽  
F. Frecentese ◽  
E. Perissutti ◽  
F. Fiorino ◽  
B. Severino ◽  
...  
Keyword(s):  
Drug Discovery ◽  
New Technology ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

Microwave-Assisted Synthesis of New Dihydropyrimidine Derivatives and Mechanism of the Reactions

2013 ◽  
Vol 10 (9) ◽  
pp. 651-656 ◽  
Author(s):  
Esvet Akbaş ◽  
Ertan Şahin ◽  
Ela Yıldız ◽  
Barış Anıl ◽  
Ìnci Akyazı
Keyword(s):  
Microwave Assisted Synthesis ◽  
Microwave Assisted
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