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Microwave enhanced synthesis of bowl ..

A one-step and fast microwave technique was developed to synthesize graphene-supported TiN nanoparticles (TiN-G) directly from graphene and dihydroxybis (ammonium lactato) titanium (IV). During the synthesis graphene served as a reductant and template to reduce the Ti-precursor into TiN and then uniformly disperse TiN nanoparticles on it. Pt/TiN-G catalyst was also successfully prepared with the portion of Pt nanoparticles was anchored at the interface of TiN and graphene. Electrochemical measurements showed that the Pt/TiN-G catalyst exhibited improved catalytic activity for methanol oxidation and enhanced CO tolerance than those of Pt/G catalyst, attributed to the formation of -OH groups on the surface of TiN. And the -OH attached TiN assisted the conversion of CO into CO2.

Download Microwave Assisted Organic Synthesis by …

AB - A one-step and fast microwave technique was developed to synthesize graphene-supported TiN nanoparticles (TiN-G) directly from graphene and dihydroxybis (ammonium lactato) titanium (IV). During the synthesis graphene served as a reductant and template to reduce the Ti-precursor into TiN and then uniformly disperse TiN nanoparticles on it. Pt/TiN-G catalyst was also successfully prepared with the portion of Pt nanoparticles was anchored at the interface of TiN and graphene. Electrochemical measurements showed that the Pt/TiN-G catalyst exhibited improved catalytic activity for methanol oxidation and enhanced CO tolerance than those of Pt/G catalyst, attributed to the formation of -OH groups on the surface of TiN. And the -OH attached TiN assisted the conversion of CO into CO2.

Aug 28, 2017 · Microwave-Assisted Synthesis of ..

Solvent-Free Microwave Assisted Synthesis of Morpholine–Piperidine–Pyrrolidine Annulated Quinoline Chalcones

AB - Abstract Oligomers incorporating the tetrapeptide MSH4, the minimum active sequence of melanocyte stimulating hormone, were synthesized by an A2 + B2 strategy involving microwave-assisted copper-catalyzed azide-alkyne cycloaddition. A2 contained an MSH4 core while B2 contained a (Pro-Gly)3 spacer. Soluble mixtures containing compounds with up to eight MSH4 units were obtained from oligomerizations at high monomer concentrations. The avidities of several oligomeric mixtures were evaluated by means of a competitive binding assay using HEK293 cells engineered to overexpress the melanocortin 4 receptor. When based on total MSH4 concentrations, avidities were only minimally enhanced compared with a monovalent control. The lack of variation in the effect of ligands on probe binding is consistent with high off rates for MSH4 in both monovalent and oligomeric constructs relative to that of the competing probe.

N2 - A one-step and fast microwave technique was developed to synthesize graphene-supported TiN nanoparticles (TiN-G) directly from graphene and dihydroxybis (ammonium lactato) titanium (IV). During the synthesis graphene served as a reductant and template to reduce the Ti-precursor into TiN and then uniformly disperse TiN nanoparticles on it. Pt/TiN-G catalyst was also successfully prepared with the portion of Pt nanoparticles was anchored at the interface of TiN and graphene. Electrochemical measurements showed that the Pt/TiN-G catalyst exhibited improved catalytic activity for methanol oxidation and enhanced CO tolerance than those of Pt/G catalyst, attributed to the formation of -OH groups on the surface of TiN. And the -OH attached TiN assisted the conversion of CO into CO2.

Microwave-assisted one-pot radiosynthesis of 2'-deoxy …

Microwave assisted synthesis is now validated in lots of commercial and educational laboratories ..

Microwave-enhanced synthesis represents a fundamental step forward in the capabilities of synthetic chemistry. It allows organic chemists to work faster, generating higher yields with increased product purity, and to scale experiments up reliably from milligrams to much larger quantities without the need to alter reaction parameters. It offers much more precise control over conditions of temperature and pressure than any previous technology. Ultimately, by eliminating much of the time and effort from the process of performing chemical reactions, it allows chemists to focus on what is most important—the development of new compounds, or refined methods for generating known products. The Milestone advantage in organic synthesis resides in the ability to provide thorough and effortless scalability and uniquely offer tools to work with the entire range of volumes in the synthetic process, from discovery, through parallel synthesis, to large-scale production.

N2 - Abstract Oligomers incorporating the tetrapeptide MSH4, the minimum active sequence of melanocyte stimulating hormone, were synthesized by an A2 + B2 strategy involving microwave-assisted copper-catalyzed azide-alkyne cycloaddition. A2 contained an MSH4 core while B2 contained a (Pro-Gly)3 spacer. Soluble mixtures containing compounds with up to eight MSH4 units were obtained from oligomerizations at high monomer concentrations. The avidities of several oligomeric mixtures were evaluated by means of a competitive binding assay using HEK293 cells engineered to overexpress the melanocortin 4 receptor. When based on total MSH4 concentrations, avidities were only minimally enhanced compared with a monovalent control. The lack of variation in the effect of ligands on probe binding is consistent with high off rates for MSH4 in both monovalent and oligomeric constructs relative to that of the competing probe.

Microwave-assisted one-pot radiosynthesis of 2 ..
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