scholarly journals Microwave Assisted Synthesis of Organic Compounds and Nanomaterials

2021 ◽  
Author(s):  
Anjali Jha
Keyword(s):  
Green Chemistry ◽  
Organic Synthesis ◽  
Electric Fields ◽  
Chemical Reactions ◽  
Dipole Moments ◽  
Electric Heating ◽  
Microwave Assisted Synthesis ◽  
Microwave Chemistry ◽  
Microwave Assisted ◽  
Promising Area

In the Conventional laboratory or industry heating technique involve Bunsen burner, heating mental/hot plates and electric heating ovens. To produce a variety of useful compounds for betterment of mankind, the Microwave Chemistry was introduced in year 1955 and finds a place in one of the Green chemistry method. In Microwave chemistry is the science of applying microwave radiation to chemical reactions. Microwaves act as high frequency electric fields and will generally heat any material containing mobile electric charges, such as polar molecules in a solvent or conducting ions in a solid. Polar solvents are heated as their component molecules are forced to rotate with the field and lose energy in collisions i.e. the dipole moments of molecules are important in order to proceed with the chemical reactions in this method. It can be termed as microwave-assisted organic synthesis (MAOS), Microwave-Enhanced Chemistry (MEC) or Microwave-organic Reaction Enhancement synthesis (MORE). Microwave-Assisted Syntheses is a promising area of modern Green Chemistry could be adopted to save the earth.

Microwave-assisted organic synthesis in Water

2021 ◽  
Vol 08 ◽  
Author(s):  
Geetanjali ◽  
Ram Singh
Keyword(s):  
Green Chemistry ◽  
Organic Synthesis ◽  
Negative Impact ◽  
Environmental Concern ◽  
Conventional Heating ◽  
Health It ◽  
Microwave Assisted ◽  
Important Principle ◽  
Environment And Health ◽  
Methods Of Synthesis

: Most of the traditional methods for organic synthesis have been associated with environmental concern. The transition from traditional to modern methods of synthesis is mainly based on principles of green chemistry to achieve better sustainability by reducing the negative impact on the environment and health. It has been found that microwaves as an energy source in organic synthesis have a great advantage over conventional heating. Microwave-assisted reactions are energy efficient and hence, brought themselves in the preview green chemistry principles. The use of safer solvents is another important principle of green chemistry. The use of water as a solvent in organic synthesis has great benefits over the use of hazardous organic solvents in terms of environment and safety. This study will cover the use of both microwave and water simultaneously in organic reactions.

scholarly journals Green Chemistry Approach for Efficient Synthesis of Schiff Bases of Isatin Derivatives and Evaluation of Their Antibacterial Activities

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Jnyanaranjan Panda ◽  
V. Jagannath Patro ◽  
Biswa Mohan Sahoo ◽  
Jitendriya Mishra
Keyword(s):  
Green Chemistry ◽  
Schiff Bases ◽  
Reaction Times ◽  
Antibacterial Activities ◽  
Primary Amines ◽  
Microwave Assisted Synthesis ◽  
Azomethine Group ◽  
Microwave Assisted ◽  
Isatin Derivatives

Microwave-assisted organic synthesis, a green chemistry approach, is nowadays widely used in the drug synthesis. Microwave-assisted synthesis improves both throughput and turnaround time for medicinal chemists by offering the benefits of drastically reduced reaction times, increased yields, and pure products. Schiff bases are the important class of organic compounds due to their flexibility, and structural diversities due to the presence of azomethine group which is helpful for elucidating the mechanism of transformation and rasemination reaction in biological system. This novel compound could also act as valuable ligands for the development of new chemical entities. In the present work, some Schiff bases of Isatin derivatives was synthesized using microwave heating method. Schiff base of Isatin were synthesized by condensation of the keto group of Isatin with different aromatic primary amines. They were characterized by means of spectral data and subsequently subjected to the in vitro antibacterial activities against gram positive and gram negative strains of microbes. It was observed that the compound with electron withdrawing substituents exhibited good antibacterial activities against almost all the micro organisms.

scholarly journals Microwave-Assisted Synthesis and Properties of Novel Hexaazatrinaphthylene Dendritic Scaffolds

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 5038
Author(s):  
Daniel García Velázquez ◽  
Rafael Luque ◽  
Ángel Gutiérrez Ravelo
Keyword(s):  
Cyclic Voltammetry ◽  
Organic Synthesis ◽  
Elemental Analysis ◽  
13C Nmr ◽  
Water Soluble ◽  
Microwave Assisted Synthesis ◽  
1H And 13C Nmr ◽  
Maldi Tof Ms ◽  
Microwave Assisted ◽  
Tof Ms

A novel family of water-soluble π-conjugated hexaazatrinaphthylenes-based dendritic architectures constructed by hexaketocyclohexane and 1,2,4,5-benzenetetramine units is developed in a microwave-assisted organic synthesis (MAOS) approach. The structures and purity of these compounds are verified by 1H and 13C-NMR, MALDI-TOF MS, UV-vis, elemental analysis, DSC, AFM, STM and cyclic voltammetry.

Recent Advances in Microwave-Assisted Synthesis and Functionalization of 1,2,3- and 1,2,4-triazoles

2021 ◽  
Vol 25 ◽  
Author(s):  
Daiana Portella Franco ◽  
Lucas Caruso ◽  
Nathalia Fonseca Nadur ◽  
Thiago Moreira Pereira ◽  
Renata Barbosa Lacerda ◽  
...  
Keyword(s):  
Organic Synthesis ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Recent Advances

: Triazoles are five-membered aromatic heterocyclics, which could exist in two isosteric forms (1,2,3-triazoles and 1,2,4-triazoles) presenting huge applications in medicinal, agricultural, supramolecular and materials sciences. The drugs fluconazole, ribavirin, cefatrizine and tazobactam, and the herbicides cafenstrole and metosulam are famous examples of triazoles. The aim of this review is to present the main recent examples of Microwave-Assisted Organic Synthesis (MAOS) applied for the synthesis end functionalization of 1,4- and 1,5-disubstituted-1,2,3-triazoles, 1,2,4-triazoles, 3-amino-1,2,4-triazoles, 1,2,4-triazol-3-one and 1,2,4-triazol-3-thiol derivatives. Worth of noting, despite some previous reviews about triazole synthesis, none of them focused exclusively on the importance of MAOS technic in the obtention and derivatization of these compounds.

2-quinolone-based derivatives as antibacterial agents: A review

2021 ◽  
Vol 18 ◽  
Author(s):  
Oussama Moussaoui ◽  
Said Chakroune ◽  
Youssef Kandri Rodi ◽  
El Mestafa El Hadrami
Keyword(s):  
Organic Chemistry ◽  
Green Chemistry ◽  
Antibacterial Agents ◽  
Medicinal Chemistry ◽  
Antibacterial Activities ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Important Family ◽  
Reduced Toxicity ◽  
Synthetic Approaches

: The chemistry of 2-quinolones derivatives has received more attention in the field of both organic chemistry and medicinal chemistry. As several advances in the application of this important family of compounds seem too significant utility. In recent years, a variety of new, effective, and novel synthetic approaches (including green chemistry, catalyzed and microwave-assisted synthesis) have been discovered and developed for the designer of various 2-quinolone-based scaffolds, representing an area of increased interest to universities and industry, as well as, to explore their antibacterial activities and reduced toxicity than the existing ones. This review summarizes the results of the literature on the synthesis strategies of 2-quinolones derivatives and their reactivity, as well as their antibacterial evaluations against different bacteria strains.

The Microwave Assisted Synthesis of Imine Derivative Ligands for Nickel(II) Complex as Catalyst Precursors in Glucose Conversion to Sorbitol

2019 ◽  
Vol 811 ◽  
pp. 47-54
Author(s):  
Deana Wahyuningrum ◽  
Irma Mulyani ◽  
Ray Putra Prajnamitra
Keyword(s):  
Particle Size ◽  
Catalytic Activity ◽  
Organic Synthesis ◽  
Average Particle Size ◽  
Microwave Assisted Synthesis ◽  
Average Particle ◽  
Calcination Process ◽  
Microwave Assisted ◽  
Good Catalytic Activity ◽  
L1 And L2

Two imine derivative ligands, L1 and L2, have been synthesized using the microwave assisted organic synthesis (MAOS) method from the reaction between bibenzoyl and L-tryptophan and L-Histidine, respectively. The ligands were further transformed into two nickel(II) complex, C1 and C2, as the precursors of catalysts in glucose conversion to sorbitol. The two NiO/SiO2 catalysts, K1 and K2, have been generated through the calcination process of complex C1 and C2, respectively, which were previously impregnated into silica. The K1 catalyst with average particle size of 5 nm shows good catalytic activity, with no presence of any nickel leached into the solution, and has successfully converted 21.99% of glucose into sorbitol. The K2 catalyst with average particle size of 10 nm also shows good catalytic activity and has successfully converted 32.30% of glucose into sorbitol, although it shows the presence of leached nickel.

ChemInform Abstract: One-Pot Microwave Assisted Synthesis under Green Chemistry Conditions, Antioxidant Screening, and Cytotoxicity Assessments of Benzimidazole Schiff Bases and Pyrimido[1,2-a]benzimidazol-3(4H)-ones.

ChemInform ◽  
2011 ◽  
Vol 42 (17) ◽  
pp. no-no
Author(s):  
Constantinos G. Neochoritis ◽  
Tryfon Zarganes-Tzitzikas ◽  
Constantinos A. Tsoleridis ◽  
Julia Stephanidou-Stephanatou ◽  
Christos A. Kontogiorgis ◽  
...  
Keyword(s):  
Green Chemistry ◽  
Schiff Bases ◽  
Microwave Assisted Synthesis ◽  
One Pot ◽  
Microwave Assisted
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