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Showing 1 to 20 of 86 for “"Nitriles"”.
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Addition of carbonyl fluoride to organic and inorganic nitriles
… fluoride will add to alkyl and perfluoroalkyl nitriles and alkane dinitriles in anhydrous acids to form the corresponding α,α-difluoroalkyl isocyanate, perfluoroalkyl isocyanate, or α,α,ω,ω-tetrafluoro- α,ω-diisocyanatoalkane. With acetonitrile the reaction proceeded slowly in anhydrous …
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The Reaction of Cyanide Ion With Aromatic Nitriles and Aromatic Heterocyclic Compounds
Made available in DSpace on 2014-12-10T23:01:27Z (GMT). No. of bitstreams: 1 7309901.pdf: 2768526 bytes, checksum: 7e9e5fe298ad35b10b884a32a0da25b7 (MD5) Previous issue date: 1972
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Computational and Spectroscopic Determination of Lithiated Benzylic Nitriles in THF/HMPA Solution
… for lithiated benzylic nitriles in low dielectric, ethereal media. Chapter 1 of this dissertation presents a review of the synthetic utility of metalated nitriles and the spectroscopic and computational techniques employed to characterize their solution structure. Also …
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A study of the reaction of hindered nitriles with selected aromatic Grignard reagents
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Chemistry, 1958
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Hydratation des nitriles catalysée par des complexes organométalliques solubles dans l'eau
… la synthèse sélective des amides à partir des nitriles correspondants par l’hydratation directe et formuler un mécanisme plausible pour cette transformation. L’hydratation catalysée en milieu aqueux utilisant le système catalytique généré par le complexe de rhodium [Rh(COD)Cl] 2 et la …
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Hemilabile Phosphorus Enamine/Imine Ligands And Their Application In Ru-Catalyzed Aqueous Hydration Of Nitriles
The insertion of aromatic nitriles into the C-Li bond of PTA-Li gave a new series of P,N k2-enaminophosphine derivatives (PTA=C(R)NH2) of 1,3,5-triaza-7-phosphaadamantane (PTA), with a characteristic double bond on the PTA cage. Oxidation or sulfuration of the ligands resulted in a mixture of …
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Study of the reaction of nitriles with dialkyl phosphites for synthesis of a-Amino-bis-phosphonates
<p>Amino bisphosphonate compounds are found in a vast array of products from water chelators to flame retardants to pharmaceuticals. Previous methods to synthesize these compounds involved the use of protic acids, which don’t provide ideal conditions for the starting materials containing acid …
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Synthesis and Coordination Chemistry of Water-soluble Phosphines: Application to Ru-Catalyzed Hydration of Nitriles in Aqueous and Biphasic Media
… complexes are active in catalytic hydration of nitriles to amides in water at 100 °C under air with tolerance toward ether, hydroxyl, nitro, bromo, aldehyde, pyridyl, benzyl, and alkyl functional groups. [RuCl2(PTA)4] is a highly active catalyst for aqueous nitrile hydration. Near quantitative …
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Pushing the limits of aldoxime dehydratases for the synthesis of industrial relevant nitriles and their use in chemo- and biocatalytic cascade reactions
The biocatalytic synthesis of nitriles and especially dinitriles were investigated within this work. Therefore, the access to dialdehydes were studied with two different approaches. The first approach was the creation of an artificial hydroformylase based on the reconstitution of a P450 …
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Part I: Strategies for the Synthesis of Monodisperse Polymers and Cyclic Polymers. Part II: Synthesis of Dipyrromethenes and Aza-dipyrromethenes from Aromatic Nitriles
This thesis is presented in two parts. Part I begins with an introduction to some contemporary problems in polymer chemistry, but also contains what is essentially a mini-review of catalyst transfer polymerization (CTP). This part of the chapter elucidates a number of common misunderstandings of …
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Electrophilic Cyanation of Alkenyl Tosylates, Ketones and Amines using Disubstituted Malononitriles
… new methods for the synthesis of alkenyl nitriles, β-ketonitriles, andcyanamides using various disubstituted malononitriles as electrophilic cyanation reagents. These approaches may be of interest to workers attempting to access compounds of those types. Chapter 1 provides a brief overview …
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The relationship between structure and specificity in the plant nitrilases
… hydrolysis of a variety of organic nitriles to the corresponding amide and/ or carboxylic acid. These reactions are important in the manufacture of fine chemicals, pharmaceutical intermediates, plastics and paints. Industrial uses of nitrilases are limited however, as wild-type …
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The Reactivity of Tetrathioperrhenate
The reaction of ReS4- with nitriles in the presence of S8 yielded azadithiolene (S2NCR 2-) complexes, ReS(S4)(S2NCR)- (R = C6H5, 4-C6H4CF 4, 4-C6H4CO2Me, or 4-C6H 4NO2). The reaction of ReS4- with CF3CN in the presence of 1/8 equiv of S8 yielded ReS(S2NCCF3)2-, in the presence of Me3NO this …
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The crystal structure of a mutant nitrile hydratase
… biocatalysts. They catalyze the conversion of nitriles to their corresponding amides. These industrial biocatalysts have recently gained attention due to the economic production of industrial commodities such as acrylamide and nicotinamide (Thomas et at., 2002). Nitrile hydratases (NHases) are …
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Hydrosilylation and hydroboration catalyzed by imido-hydride complexes of molybdenum (IV)
… 2 also catalyzes hydroboration of carbonyls and nitriles. We report the first case of metal-catalyzed hydroboration of nitriles as well as hydroboration of carbonyls at very mild conditions. Conversion of carbonyl functions can be performed with high selectivities in the presence of nitrile …
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Formation of (halo)acetamides and (halo)acetonitriles from the reaction of monochloramine and (halo)acetaldehydes in water
… formed by combined chlorine, such as haloacetonitriles and haloacetamides, might be more toxic than regulated DBPs. Monochloramine has been shown to react with aldehydes, common DBPs formed from ozone and free chlorine disinfection, to form carbinolamines that slowly dehydrate to imines which …
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Stereochemistry of small molecules: Configurational and conformational control
… stability of lithiated and magnesiated nitriles. We developed a new series of lithio-cyclopropylnitriles bearing chelating groups for intramolecular coordination, as a possible strategy to impart configurational stability. Although this strategy has not yet been successful, using density …
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