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Showing 1 to 14 of 14 for “"Amidines"”.
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Reaction of CS2 and CO2 with Amidines and Guanidines
Neutral organic bases such as amidines and guanidines are very useful in studies of the reactivity of heterocumulenes such as carbon disulfide (CS2) and carbon dioxide (CO2) to build C-C or C-N bonds. Reaction of amidines with CS2 in the absence of water and without adding desulfurization reagents …
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NOVEL ETHYLENE-BRIDGED HEXADENTATE BIS(AMIDINES), BIS(AMIDINATES), AND MULTINUCLEAR COINAGE METAL BIS(AMIDINE) COMPLEXES
<p>A new series of hexadentate flexible bis(amidine) ligands (<strong>L<sup>1–6</sup></strong>H<sub>2</sub>) and the multinuclear coinage metal complexes <strong>1</strong>–<strong>5</strong> of <strong>L<sup>4</sup></strong>H<sub>2</sub> were synthesized and characterized. The synthesis of<strong> …
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BIFUNCTIONAL BF2 COMPLEXES OF POLYDENTATE BIS(AMIDINATES): SYNTHESIS, STRUCTURES, AND PHOTOLUMINESCENCE PROPERTIES
… <p>The syntheses of the precursor bis(amidines) <strong>L<sup>1-5</sup></strong>H<sub>2</sub> were carried out through a proven three-step method of by treating 2 equivalents of pivoloyl chloride with ethylene diamine in CH<sub>2</sub>Cl<sub>2</sub> to yield a bis(amide) as a colorless …
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Palladium-catalyzed C-N cross-coupling reactions toward the synthesis of drug-like molecules
… pharmaceutical applications. Both amides and amidines are common moieties in drug-like molecules because of the various biological activities of these functional groups. Potential medicinal applications of the developed cross-coupling of amidine salts with aryl halides methodology are …
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Development of Highly Reactive Sulfone Iminium Fluoride Reagents and Their Application in Fluorine Methodologies
… as useful ii i precursors for the synthesis of amidines and imidates when reacted with amines and alcohols, respectively.</p> <p>In the final part of this project, we synthesize fluoroformamidines via the rearrangement of in situ-generated amidoximes using SIFs. The stable fluorinated products …
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1,1-enediamines and β-substituted enamines in heterocyclic synthesis
… two substituted enamines with two different amidines. When benzamidine was used, the expected pyrimidines were obtained. But, when 2-benzyl-2-thiopseudourea (which is also an amidine) was used, of the two expected pyrimidines, only one was obtained. In the other case, an additional …
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The synthesis of kinetically stabilised heavy group 13 hydride complexes
… and two C 2,6-terphenyl substituted amidines. Chapter Three introduces the alkali metal chemistry of monoanionic bidentate N,Nʹ ligands. Alkali metal complexes of the aforementioned super bulky ligands (Chapter Two) have been prepared. Chapter Four introduces the +1 oxidation state …
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METHODOLOGY DEVELOPMENT OF N-SULFINYL METALLOENAMINES AND ASYMMETRIC TOTAL SYNTHESIS OF (+)-EPIIBOGAMINE
… A new class of compounds, bis N-sulfinyl amidines, were prepared as the potential oxidative coupling monomers for the synthesis of (+)-chimonanthine in future studies.
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The Chemical Synthesis of Model Catalysts Related to Enzymes
… reaction which involved the condensation of amidines with α-haloketones. The reactants required were ethyl 2-carbobenzoxamido-4-oxo-5-chlorovalerate and N<sup>α</sup>-acetyl-N<sup>ε</sup>-tosyl-lysine amidine, both previously unknown. The chloromethylketone was synthesized from α-ethyl …
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Metabolite biosynthetic enzymes: catalysis, substrate specificity and protein engineering
… catalyze the formation of azoles, thioamides and amidines but the role of LahD1 is still unknown. In efforts to identify its activity I was able to get the crystal structure of LahD1 and see the location of its Iron-Sulfur cluster, a co-factor never seen before in YcaOs. Another enzyme part of the …
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Bis-and tris (amidine) fluoroboron cations and related systems studies by Multinuclear NMR and fast atom bombardment mass spectometry
The formation and the isolation of fluoroboron salts, (D2BF2+)(PF6-), (DD'BF2+)(PF6-) and (D3BF2+)(PF6-)2, have been carried out. 1,8-Diazabicyclo [5,4.0]undec-7-ene (DBU) and 1,5-diazabicyclo[4,3,O]non-5-ene (DBN), extremely strong organic bases, were introduced into the fluoroboron cation systems …