Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 51 for “"Organic reactions"”.
-
Structural Aspects of Some Montmorillonite-Organic Reactions
Made available in DSpace on 2014-12-04T19:13:58Z (GMT). No. of bitstreams: 1 6004003.pdf: 6339719 bytes, checksum: 198ae65f02f48ee49ec1cd87b54472f7 (MD5) Previous issue date: 1960
-
Investigation of clay-organic reactions using complex resistivity
Includes bibliographical references (pages 367-374).
-
Computational predictions and reactivity analyses of organic reactions
… reactivity analyses and predictions for organic systems. The research began with studies on specific reactions using quantum mechanics and molecular mechanics simulations. Beyond looking at individual reactions, projects in method development were also initiated to set up a more efficient …
-
Organic reactions catalyzed by copper(I) hydride complexes
… nucleophile surrogates in imine allylation reactions. By modulating the nitrogen-protecting group, either highly branched- or linear-selective addition can be achieved from the same allene. Both reactions exhibit excellent diastereoselectivity and broad functional-group tolerance. Good …
-
Study of organic reactions in pyridinium-based ionic liquids
… a lot of attention as novel materials for organic transformations. This is due to their unique properties, which make them suitable substitutes for organic solvents. Most of the available literature is focused on the application of imidazolium-based ionic liquids for organic reactions, …
-
Observation and Nature of Non-statistical Dynamic Effects in Ordinary Organic Reactions
… the rates and selectivities of chemical reactions. However, these statistical models can fail to explain experimental results of ordinary organic reactions. For these reactions, consideration of nonstatistical dynamic effects or the detailed motion and momenta of the atoms is necessary to …
-
Stabilization of transition states of organic reactions by cyclodextrins, micelles, and dendrimers
Micelles of cetyltrimethylammonium bromide (CTAB) catalyze the basic cleavage of p-nitrophenyl alkanoates, whereas micelles of sodium dodecyl sulphate (SDS) inhibit this reaction. The strength of binding of the esters to both CTAB and SDS shows the same linear dependence and sensitivity to the acyl …
-
Surface chemistry of metal oxide materials: from metalorganic and organic reactions to gas sensing
… not only used as a catalyst for various surface reactions but also as a catalytic support. Cu/ZnO is a commonly used industrial catalyst for methanol synthesis. In chapter 3, to understand the surface chemistry between Cucontaining species and ZnO substrate, we utilized the vacuum-based …
-
Stereo–Chemical Control of Organic Reactions in the Interlamellar Region of Cation–Exchanged Clay Minerals
… (cyclopropane formation) and C-H insertion reactions (-lactam, -lactam and -lactone formation) catalysed by the Cu(II) exchanged clay minerals and the stereochemical consequences of carrying out the reactions within the clay interlayer
-
Development of New Synthetic Methods for Transition Metal-Catalyzed Organic Reactions and Synthesis of Curcumin-Based Adducts
<p>Development of new synthetic methods for organic compounds is one of the most critical endeavors in modern chemistry. This pursuit not only broadens the scope of chemical synthesis but also provides valuable tools for various applications in pharmaceuticals, materials science, and so on.</p> …
-
The Chemistry of Titanium-Tetrafluoride: 1. Catalysis of Some Organic Reactions. 2. Synthesis and Investigation of Ethoxy-Titanium(iv) Fluorides
Made available in DSpace on 2014-12-05T19:37:53Z (GMT). No. of bitstreams: 1 6200636.pdf: 5238247 bytes, checksum: 7cd21c1b9ea5b9a9338928bc242a1bea (MD5) Previous issue date: 1961
-
Organische Reaktionen an stark sauren Nafion-Silica nanokompositen Katalysatoren
This paper decribes the study on several organic reactions over highly acidic Nafion/Silica catalysts. Via embedding nano-sized Nafion particles within a highly porous silica matrix, a nano-composite catalyst is manufactured, which got tremendously improved desorption and adsorption properties. …
-
Utilização de Histórias em Quadrinhos no ensino de reações orgânicas para Ensino Médio.
The Organic Chemistry Teaching in High School requires an understanding of the chemical changes that occur in natural and technological systems. For a better understanding of all the processes it is important that the teacher seek new methods to assist in the process of teaching and learning in …
-
Magnetic Resonance Investigations of the Structures and Reactivities of Some Transition Metal Complexes. Part One: Magnetic Resonance Studies of Some Cobalt(ii) Complexes. Part Two: Esr Analysis of Dioxygen Adducts of Cobalt(ii) Complexes. Part Three: Catalytic Oxidation of Organic Reactions
Made available in DSpace on 2014-12-13T20:09:48Z (GMT). No. of bitstreams: 1 7606990.pdf: 4955352 bytes, checksum: 33330bbe2b4ff55ce1bfe377af438818 (MD5) Previous issue date: 1975
-
Nature's way: the effects of hydrogen bond networks on acidities, catalysis, and molecular recognition
… hydrogen bonds to better understand enzymatic reactions. Anion recognition abilities of synthetic hydrogen bonded receptors are studied to probe the role of hydrogen bonds in anion channels. At the same time, environmentally friendly green acids are developed and their catalytic reactivities in …
-
Computational Analysis of Molecules and Chemical Reactions from Cheminformatic Databases
A large number of organic reactions feature post-transition state bifurcations. Selectivities in such reactions are difficult to analyse because they cannot be determined by comparing the energies of competing transition states. Molecular dynamics approaches can provide answers but are …
-
An EPR and DFT investigation of the products formed in the reaction of group 11 metal atoms with three-membered heterocyclic compounds
… shown to be efficient catalysts in a variety of organic reactions. In particular, Group 11 metals have emerged as essential components in the carboxylation or metal-catalyzed ring expansion of three-membered heterocyclic compounds. Previous reports have speculated the presence of short-lived …
Page 1 of 3