scholarly journals Asymmetric Iodoetherification of Isosorbide-Derived Glycals: A Regio- and Stereoselective Access to a Variety of O-Substituted Isosorbide Derivatives

Proceedings ◽  
2019 ◽  
Vol 41 (1) ◽  
pp. 62
Author(s):  
Christophe Berini ◽  
Aurélie Lavergne ◽  
Valérie Molinier ◽  
Stéphane Lebrun ◽  
Jean-Marie Aubry ◽  
...  
Keyword(s):  
Starting Material ◽  
Industrial Scale ◽  
New Approach ◽  
Hydrophilic Group ◽  
Neutral Material ◽  
Carbon Neutral

Isosorbide is a competitive starting material for various valuable derivatives by functionalization and/or substitution since it is a renewable and carbon neutral material that is produced on an industrial scale from sorbitol. A set of O-alkyl- or O-arylated beta-iodo ethers has been synthesized from isosorbide. The key step was the iodoetherification of isosorbide-derived glycals with a variety of oxygenated nucleophiles in the presence of N-iodosuccinimide. trans-Iodo ethers and acetate were obtained in good yields and the removal of iodide affords isosorbide derivatives. The usefulness of this new approach is illustrated by the synthesis of a surfactant having a dimer of isosorbide as hydrophilic group and by the preparation of a structurally unusual bicyclic anhydro carbohydrate.

The Effects of Inoculum in Fermented Glutinous Rice for Nanotechnology Applications

2013 ◽  
Vol 667 ◽  
pp. 277-280 ◽  
Author(s):  
S.F. Nik ◽  
N.F.A. Zainal ◽  
A.A. Azira ◽  
F. Mohamed ◽  
Saifollah Abdullah ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Infrared Spectroscopy ◽  
Graphene Sheet ◽  
Nanostructured Materials ◽  
Glucose Level ◽  
Starting Material ◽  
Optimum Amount ◽  
New Approach ◽  
Glutinous Rice

Carbon nanotubes (CNTs) were unique nanostructured materials composed of single or multiple rolled graphene sheet which usually need expensive sources as a starting material in its preparation. In this paper, new approach of starting material was expected to be commercialized due to its cheaper and renewable properties. Fermented glutinous rice would be optimized before it can be used as starting material in the CNTs preparation. In optimizing the process, a few parameters were considered. One of the important parameters was the amount of inoculums; known as ‘ragi’. This paper showed the effect of inoculums using Fourier Transmission Infrared Spectroscopy (FTIR). The amount was varies depending on percentage of glutinous rice used in the process. The optimum amount of inoculums for nanotechnology application was 3.0% (w/w) of glutinous rice due to the most favorable level of glucose and alcohol after 3 days fermentation. The glucose level decreased whereas alcohol yield was raised when higher inoculums amount were used. The result suggested that sample with inoculums amount of 3.0% (w/w) glutinous rice was the best starting material for nanotechnology application.

scholarly journals New Approach for the Synthesis of Aryloxy 1,3-Oxazines

2020 ◽  
pp. 1-5
Author(s):  
Ghufran T Sadeek ◽  
◽  
Mohammad S Al-Ajely ◽  
Neim H Saleem ◽  
◽  
...  
Keyword(s):  
Starting Material ◽  
New Approach ◽  
Pharmaceutical Application ◽  
Wide Range ◽  
The Rich ◽  
The Difference

Oxazinne compounds have drew the attention of many researchers to find different approaches to the synthesis of this type of compounds according to the success of their use in a wide range of pharmaceutical application during the last decades .It is also for the difference reactivity of these analogues is exhaustively depicted and illustrates the rich versatility of this class of starting material. They proved to have most of actions of a combination of other drugs. We are herein investigate the synthesis of ethyl aryloxy acetate(S1-6) from the reaction of the corresponding ethyl bromo acetate with aryl phenols .These intermediates were cyclized with antharanilic acid affording the titled compounds

scholarly journals NEW APPROACH FOR THE SYNTHESIS OF ARYLOXY 1,3-OXAZINES

2020 ◽  
Vol 8 (11) ◽  
pp. 137-144
Author(s):  
Ghufran T. Sadeek ◽  
Mohammad S.Al-jely ◽  
Neim H. Saleem
Keyword(s):  
Starting Material ◽  
New Approach ◽  
Pharmaceutical Application ◽  
Wide Range ◽  
The Rich ◽  
The Difference

Oxazine compounds have drew the attention  of many researchers to find different approaches to the synthesis of this type of compounds  according to the success of their use in a wide range of pharmaceutical application during the last decades  .It is  also for the difference    reactivity of these analogues is exhaustively depicted and illustrates the rich versatility of this class of starting material. They proved to have  most of actions of a combination of other drugs. We are herein investigate the synthesis of ethyl aryloxy acetate(S1-6)  from the reaction of the corresponding ethyl bromo acetate with aryl phenols .These intermediates were cyclized with antharanilic acid affording the titled compounds

CeP nanoparticle-reduced graphene oxide hybrid: an efficient electrocatalyst for NH3 synthesis under ambient conditions

2021 ◽  
Author(s):  
Yuyao Ji ◽  
LEI Li ◽  
Wendong Cheng ◽  
Yu Xiao ◽  
Chengbo Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Co2 Emission ◽  
High Energy ◽  
Industrial Scale ◽  
Ambient Conditions ◽  
Bosch Process ◽  
Reduced Graphene ◽  
Carbon Neutral

The Haber–Bosch process for industrial-scale NH3 production suffers from high energy consume and serious CO2 emission. Electrochemical N2 reduction is an attractive carbon-neutral alternative for NH3 synthesis but severely challenged...

scholarly journals New Approach for the Synthesis of Aryloxy 1,3-Oxazines

2020 ◽  
pp. 1-5
Author(s):  
Ghufran T Sadeek ◽  
◽  
Mohammad S Al-Ajely Al-Ajely ◽  
Neim H Saleem ◽  
◽  
...  
Keyword(s):  
Starting Material ◽  
New Approach ◽  
Pharmaceutical Application ◽  
Wide Range ◽  
The Rich ◽  
The Difference

Oxazinne compounds have drew the attention of many researchers to find different approaches to the synthesis of this type of compounds according to the success of their use in a wide range of pharmaceutical application during the last decades .It is also for the difference reactivity of these analogues is exhaustively depicted and illustrates the rich versatility of this class of starting material. They proved to have most of actions of a combination of other drugs. We are herein investigate the synthesis of ethyl aryloxy acetate(S1-6) from the reaction of the corresponding ethyl bromo acetate with aryl phenols.These intermediates were cyclized with antharanilic acid affording the titled compounds.

scholarly journals SYNTHESIS AND STRUCTURE OF ARTIFICIAL ADJUVANT FOR PREPARATION OF SYNTHETIC VACCINES

2019 ◽  
Vol 16 (31) ◽  
pp. 565-570
Author(s):  
S. V. Savina ◽  
V. M. Skorlyakov ◽  
D. A. Zayarskiy
Keyword(s):  
Starting Material ◽  
Laboratory Animals ◽  
Clinical Tests ◽  
New Approach ◽  
Synthetic Vaccines ◽  
Polydiallyldimethylammonium Chloride

The aim of the research was to develop a new approach to designing a new structure in creating synthetic vaccines. We succeeded in synthesizing a polyelectrolyte adjuvant. As a starting material, we used polydiallyldimethylammonium chloride modified with halogen hydrate-ions. The pre-clinical tests carried out on laboratory animals demonstrated no deviations in their physiological and toxicological parameters.

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