نتایج جستجو برای: dehydration of alcohols

تعداد نتایج: 21165385  

2013
Jae Eun Shin Jung Hyun Park Ho Sung Yi Byung Kook Ye Hyoung Seop Kim

The isolated idiopathic finger flexor tenosynovitis is a rare condition, related to diversed etiologies. The traditional treatment of flexor tenosynovitis includes medications and injection of steroids. If the conservative treatment is not effective, surgical management is usually recommended. And alcohol installations have been rarely performed. We are reporting an extremely rare case of a 56-...

Journal: :Chemical science 2015
William D Fiers Greg J Dodge Yang Li Janet L Smith Robert A Fecik Courtney C Aldrich

Polyketide synthase (PKS) β-processing domains are responsible for much of the stereochemical complexity of polyketide natural products. Although the importance of β-processing domains has been well noted and significantly explored, key stereochemical details pertaining to cryptic stereochemistry and the impact of remote stereogenic centers have yet to be fully discerned. To uncover the inner w...

2013
P Parekh Usha R Yerramilli

Cloud points (CPs) of heptaoxyethylene dodecyl ether (C12E7) in the presence of varying concentrations of additives such as inorganic salts, alkanols, diols, glycols and their ethers, hydroptopes and short chain tetraalkylammonium salts are measured and the increase/decrease in CP is discussed. While inorganic anions decrease the CP due to the “salting out” (dehydration) effect and follow the H...

An efficient method is described for the mild and rapid tetrahydropyranylation of alcohols and phenols using a catalytic amount of N-chlorosaccharin (1 mol %) and 3, 4-dihydro-2H-pyran under solvent-free condition at room temperature. Benzylic alcohols and phenols containing electron withdrawing or donating groups in various positions of phenyl ring, cinamyl alcohol, primary, ...

Journal: :Microporous and Mesoporous Materials 2023

The fluoride medium synthesis of zeolites, especially in the strongly acidic regions, yields products with unique characteristics such as ultra-hydrophobic surfaces and defect-free lattices. However, it is often difficult to incorporate aluminum into framework zeolites this medium, limiting acquisition development catalytic materials. present paper shows that inter-zeolite transformation effici...

Journal: :Plant science : an international journal of experimental plant biology 2013
María Francisca Aguayo Diego Ampuero Patricio Mandujano Roberto Parada Rodrigo Muñoz Marta Gallart Teresa Altabella Ricardo Cabrera Claudia Stange Michael Handford

Sorbitol is converted to fructose in Rosaceae species by SORBITOL DEHYDROGENASE (SDH, EC 1.1.1.14), especially in sink organs. SDH has also been found in non-Rosaceae species and here we show that the protein encoded by At5g51970 in Arabidopsis thaliana (L.) Heynh. possesses the molecular characteristics of an SDH. Using a green fluorescent protein-tagged version and anti-SDH antisera, we deter...

Journal: :iranian journal of pharmaceutical sciences 0
mohammad sirousazar polymer engineering group, faculty of engineering, tarbiat modares university, tehran, iran faculty of chemical engineering, urmia university of technology, urmia, iran mehrdad kokabi polymer engineering group, faculty of engineering, tarbiat modares university, tehran, iran morteza yari department of mechanical engineering, faculty of engineering, university of mohaghegh ardabili, ardabil, iran

nowadays, hydrogels are widely used as wound dressings in biomedical applications. similar to other types of the moist (wet) wound dressings, it is necessary to have sufficient information about their dehydration kinetics during the pre-usage period (e.g. storage duration) and also the wound healing process. in this work, hydrogel wound dressings based on polyvinyl alcohol were prepared by cycl...

Trimethylsilylation of alcohols and phenols were carried out under solvent-free conditions with hexamethyldisilazane (HMDS) using LaCoO3 perovskite. LaCoO3 as an efficient catalyst accelerated this reaction under milder condition. The advantages of this method are evident regarding, easy separation, low cost and low catalyst loading, lack of pollution, easy work-up, and selective protection of ...

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