نتایج جستجو برای: microwave assisted synthesis

تعداد نتایج: 576400  

2014
Maria De Rosa Johan Gising Luke R. Odell Mats Larhed

Tuberculosis (TB) represents a major public health problem. The growing number of (extensively) multi-drug resistance cases indicates that there is an urgent need for discovery of new anti-TB entities, addressed towards new and specific targets, and continuous development of fast and efficient synthetic strategies to access them easily. Microwave-assisted chemistry is well suited for small-scal...

2015
Mark C. Bagley Mohammed Baashen Irina Chuckowree Jessica E. Dwyer David Kipling Terence Davis Jean Jacques Vanden Eynde

Microwave-assisted Suzuki-Miyaura cross-coupling reactions have been employed towards the synthesis of three different MAPKAPK2 (MK2) inhibitors to study accelerated aging in Werner syndrome (WS) cells, including the cross-coupling of a 2-chloroquinoline with a 3-pyridinylboronic acid, the coupling of an aryl bromide with an indolylboronic acid and the reaction of a 3-amino-4-bromopyrazole with...

2012
Rina Das Dinesh Mehta Harsh Bhardawaj

Microwave-assisted organic synthesis is an enabling technology for accelerating drug discovery and development processes. Microwave organic synthesis opens up new opportunities to the synthetic chemist in the form of new reaction that are not possible by conventional heating and serve a flexible platform for chemical reaction. This review focuses on the advances in the developing of innovative ...

Ashraf S. Shahvelayati Jila Vesalian

Benzylaminoalkenones and benzylaminoalkenoates 3 were synthesized from reaction of benzylamine with corresponding 1,3-diketones and 1,3-ketoesters in the presence of catalytic amount of chloroacetic acid under microwave radiation. This method offers several advantages including high yield of products, recyclable of the catalyst and easy experimental work-up procedure.

In the present work, we have developed a mild, efficient, and environmentally benign method for the synthesis of tetrahydrobenzo[b]pyran derivatives via a three-component cyclocondensation of aldehydes, malononitrile and dimedone utilizing ammonium chloride as a simple, easily available and cost effective catalyst under microwave irradiation. This method has several attracting features such as ...

Journal: :Journal of peptide science : an official publication of the European Peptide Society 2006
Bernadett Bacsa Bimbisar Desai Gábor Dibó C Oliver Kappe

A rapid and efficient microwave-assisted solid-phase synthesis method is described for the preparation of the nonapeptide WDTVRISFK, using conventional Fmoc/Bu(t) orthogonal protection strategy. The synthesis protocol is based on the use of cycles of pulsed microwave irradiation with intermittent cooling of the reaction during the removal of the Fmoc protecting group and during the coupling. Th...

Journal: :Journal of combinatorial chemistry 2010
Chai Hoon Soh Yulin Lam

A microwave-assisted solid-phase synthesis of 2-(benzylthio)imidazo[1,2a]pyrimidin-5-ones has been developed. Using microwave irradiation, the reaction time was significantly reduced from a few days to 80 min. A representative set of 10 2-(benzylthio)-6,7-substituted-imidazo[1,2a]pyrimidin-5-ones was prepared. These compounds were subsequently N-alkylated and formylated in good yields.

2010
B Mistry Dipti Medhane Krishnapriya Mohanraj Sanjeevani A. Ghone

Rapid and efficient methods for the synthesis of an important intermediate of benazepril ethyl 3-phthalimido-2,3,4,5-tetrahydro-1H-[1]benzazepin-2-one-1-acetate under the influence of microwave irradiation are described. A comparative study of conventional and microwave assisted method is briefly discussed.

Journal: :international journal of nano dimension 0
s. sabbaghi nano chemical engineering dep. of shiraz university, shiraz, iran. h. orojlou nano technology research institute, shiraz university, shiraz, iran. m. r. parvizi research and development of boualisina petrochemical company,mahshahr, iran. r. saboori nano technology research institute, shiraz university, shiraz, iran. m. sahooli nano chemical engineering dep. of shiraz university, shiraz, iran.

in the past decades, many methods have been developed to synthesize zero- dimensional  nanoparticles, quasi–one–dimensional (1d) cuo nanostructures, such as metal organic deposition technique,  microwave irradiation, sol-gel-like dip  technique, reverse micelle-assisted route, chemical method, and simple template free solution route. among those synthesis methods, hydrothermal and chemical reac...

2011
Mohammed. Rayees Ahmad V. Girija Sastry Nasreen Bano Rayees Ahmad

Chalcones belong to an important class of flavonoids, which may be prepared by Claisen reaction. They possess a wide range of biological activities and industrial applications. Kostanecki was the first to give the term chalcone and who did pioneering work in the synthesis of naturally coloring compounds. Cytotoxicity against tumour cell lines may be the result of disruption of the cell cycle, i...

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