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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Aminonitrile"”.
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Directed Palladium Catalyzed Acetoxylation of Indolines and Enantioselective Total Synthesis of (–)-Voacinol and (–)-Voacandimine C
… the synthesis of the corresponding hexacyclic C8-aminonitrile. Stereocontrolled methylenation of a C8-enamine derivative of deoxoapodine, accessed by ionization of the C8-aminonitrile, afforded a symmetrical dodecacyclic bis-aminonitrile. Final-stage biogenetically inspired controlled reductive …
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Asymmetrische Synthese von Dibenzylbutan- und Dibenzylbutyrolacton-Lignanen
… thesis describes the application of a chiral a-aminonitrile in the Michael addition to cyclic and open-chained Michael acceptors. The emphasis of this work is the synthesis of lignans. Different lignans like dibenzylbutan lignan from Virola sebifera, (+)-hinokinin, (+)-dihydrocubebin and …
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Part I: Synthesis of Aromatic Polyketones Via Soluble Precursors Derived from Bis(A-Amininitrile)S; Part Ii: Modifications of Epoxy Resins with Functional Hyperbranched Poly(Arylene Ester)s
… via soluble precursors derived from bis(a-aminonitrile)s. Bis(a-aminonitrile)s were easily synthesized from dialdehydes and secondary amines in very high yield by the Strecker reaction. Polymerization of bis(a-aminonitrile)s with activated dihalides using NaH as base in DMF yielded soluble, …
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Novel nitrogen containing polymers via Reissert chemistry
… compound chemistry and via the use of bis(α-aminonitrile)s. These monomers were produced in high yields with preformed heterocyclic nuclei which included benzothiazole, isoquinoline and quinoline. Acylated linear polyamine derivatives were obtained by the step growth condensation …
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Studies on the synthesis of bisindole Aspidosperma alkaloids
… the synthesis of the corresponding hexacyclic C8-aminonitrile. Stereocontrolled methylenation of a C8-enamine derivative of deoxoapodine, accessed by ionization of the C8-aminonitrile, afforded a symmetrical dodecacyclic bisaminonitrile as a versatile precursor to these bisindole alkaloids. …
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Part 1. the mesomorphic properties of arloxy-s-triazines and their analogs, Part 2. the synthesis and polymerization behavior of α-aminonitriles and related compounds
… with these compounds in the mesophase. Part 2. α-Aminonitriles and their derivatives have played an important role in the synthesis of enantiomerically pure and racemic α-amino acids for almost ninety years. Much less studied is the alkylation behavior of this particular class of compounds. The …
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Part 1. Diaziridinium Ions: First Reported Synthesis and Reactivity Studies. Part 2. Tropylium Ion Mediated alpha-Cyanation of Amines. Part 3. Multicatalytic Synthesis of Complex Tetrahydrofurans
… practical use in a one-pot protocol for alpha-aminonitrile synthesis. We also report an application of this new oxidant towards an aza-Cope rearrangement. Finally, we report a multicatalytic method that uses bismuth(III) triflate to catalyze a nucleophilic addition to an aldehyde followed by …
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Methoden zur asymmetrischen nucleophilen Glyoxylierung
… the application of chiral and racemic glyoxylate aminonitriles in developing both a stoichiometric as an organocatalytic procedure for the synthesis of beta-substituted alpha-ketoesters. This could be realised by applying the concept of Umpolung, which enables the nucleophilic introduction of the …
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Zur asymmetrischen Synthese von Beta-Thio-Alpha-Aminosäuren
… cleavage with SmI2 resulted the protected aminonitriles. Unhappily, no method could be found to transform the nitriles into the correspondending amino acids neither under acidic nor under basic conditions. Only decomposition can be observed. Nevertheless, the sulfidic group of the …