Efficient microwave-assisted synthesis of bisimides …

The research and application of green chemistry principles have led to the development of cleaner processes. In this sense, during the present century an ever-growing number of studies have been published describing the use of ionic liquids (ILs) as solvents, catalysts, or templates to develop more environmentally friendly and efficient chemical transformations for their use in both academia and industry. The conjugation of ILs and microwave irradiation as a non-conventional heating source has shown evident advantages when compared to conventional synthetic procedures for the generation of fast, efficient, and environmental friendly synthetic methodologies. This review focuses on the advances in the use of ILs in organic, polymers and materials syntheses under MW irradiation conditions.

Efficient microwave-assisted synthesis of bisimides - …

09/06/2009 · Microwave-assisted synthesis using ionic ..

Fast and Efficient Microwave-Assisted Synthesis of ..

The conjugation of ILs and microwave irradiation as a non-conventional heating source has shown evident advantages when compared to conventional synthetic procedures for the generation of fast, efficient, and environmental friendly synthetic methodologies.

“Microwave assisted synthesis of imides and bisimides”

Microwave dielectric heating proved to be an efficient method for the one-pot and stepwise syntheses of symmetrical and unsymmetrical naphthalenediimide derivatives of α-amino acids. Acid-labile side chain protecting groups are stable under the reaction conditions; protection of the α-carboxylic group is not required. The stepwise condensation of different amino acids resulted in high yields of unsymmetrical naphthalenediimides. The reaction proceeds without racemization and is essentially quantitative.

Martínez-Palou R (2006) Efficient microwave-assisted synthesis of bisimides
Rapid and convenient microwave-assisted synthesis of ..

Microwave-assisted synthesis of ..

Abstract:
Zeolitic imidazolate frameworks (ZIFs), a subclass of metal-organic frameworks (MOFs), havebeen recently employed in various fields such as gas separation, catalysis, water purification anddrug delivery.1 Their high importance is due to their chemical and thermal stability in addition tothe flexibility of their design. ZIFs have been synthesized solvothermally or at room temperatureusing organic solvents (e.g. methanol, DMF) or pure water.2 The control of size and morphologyof crystals has been achieved using reverse microemulsion methods, microwave, ultrasoundassistedsyntheses and coordination modulation methods.1-3 Herein, we investigate a newsynthesis method where ZIF crystals are produced using the reaction-diffusion framework (RDF)in a gel medium at room temperature. The method is based on the diffusion of an outer solutionof the organic linker or mixed linkers into an agar gel containing the inner metal ions Zn(II)and/or Co(II) where a precipitation reaction takes place leading to the formation of the ZIFcrystals. A propagating supersaturation wave, initiated at the interface between the outer solutionand the gel matrix leads to a precipitation front endowed with a gradient of crystal sizes rangingbetween 100 nm and 55 μm along the same reaction tube. While the precipitation fronts of ZIF-8 and ZIF-67 travel the same distance for the same initial conditions, ZIF-8 crystals therein areconsistently smaller than the ZIF-67 crystals due to the disparity of their rate of nucleation andgrowth. The effects of temperature, the concentration of the reagents, and the thickness of thegel matrix on the growth of the ZIF crystals are investigated. We also show that by using RDF,we can envisage the formation mechanism of the ZIF crystals, which consists of the aggregationof ZIF nanospheres to form the ZIF-8 dodecahedrons. Moreover, using RDF the formation of asolid-solution ZIF via the incorporation of Co(II) and Zn(II) cations within the same frameworkis achieved in a controlled manner. Finally, we demonstrate that doping ZIF-8 by Co(II)enhances the photodegradation of methylene blue dye under visible light irradiation in theabsence of hydrogen peroxide.

Solvent-free microwave organic synthesis as an efficient procedure ..

We used microwave-assisted CBD to synthesis of ZnO ..

Biography:
Dr. Sara Pellegrino is an Assistant Professor of Organic Chemistry at the University of Milano, Department of Pharmaceutical Sciences, Italy. She received her Ph. D in Medicinal Chemistry from the University of Milano in 2005. She has been visiting scientist at the University of Regensburg (Germany) in 2005-2006. Her research interests are the synthesis of peptides and peptide mimics, and their application in Material Science, Catalysis, Biochemistry and Medicinal Chemistry. She is author of more than 50 papers in peer-reviewed journals, of two patents filed, and of 60 communications at international conferences.

via room-temperature and microwave-assisted synthesis

Biography:
Dr. Shah Mohd Ashraf after completing doctorial studies in Condensed Matter Physics, was appointed as Assistant Professor in National Institute of Technology Srinagar in year 1999. Here, Shah embarked upon new research programme, pioneered the synthesis of broad range of nanomaterials and established World Bank Funded Research Centre (Special Centre for Nanosciences) and laid the foundations to learn the new sciences-Nanotechnology in early twenties. In year 2009, shah moved to Middle East on deputation for a short period of two years and published book titled, "Principles of Nanoscience & Nanotechnology" with Dr. T. Ahmad, an eminent Chemist. Dr. Shah is teaching Nanotechnology, Materials Science and Materials Characterization from the last two decades and is actively engaged as reviewer /editor of many scientific journals. Shah has authored more than 75 international peer reviewed scientific papers in National and International journals and has written 5 Books on Nanotechnology and many Book Chapters with reputed international publishers. In his research, he has targeted bio-compatible and energy harvesting nano-materials, which has applications in day to day life. Shah has been awarded two major projects by the Govt of India under Nano-Mission and leadership qualities in taking lead role in innovative programmes have been acknowledged on many occasions. Shah has delivered invited talks in number of international forums. Dr. shah is also a member of many science academies and societies and his work has been cited by number of scientific reporters as well as scientific media. Organiser and Chair of several national and international symposia, schools and conferences which includes 3rd Int. Conference on "Nanotechnology for Better living" from 25-29 May 2016 in collaboration with IIT Kanpur. In his spare time, Dr. Shah is regularly organising INSPIRE internship programme launched by Hon’ble Prime Minister of India for the bright and genius students of the Kashmir Valley, which aims to attract talented students for the study of Science and Technology in early age which ultimately will bring peace across the globe.