Global ETD Search
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Showing 1 to 5 of 5 for “"Oxetanes"”.
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REDUCTIVE ELIMINATION OF (DPMS)PTIV COMPLEXES DERIVED FROM ISOMERIC 2-BUTENEs AND 2-BUTYNE (DPMS=DI(2-PYRIDYL)METHANE SULFONATE)
… cyclic olefins can be readily oxidized to PtIV oxetanes, followed by reductive elimination to produce corresponding epoxides. A catalytic version of this reaction can potentially be achieved if decomposition of active species responsible for olefin substitution is avoided. Several attempts were …
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Novel Photochemical Methodologies for Diversity Oriented Synthesis and Screening of Combinatorial Libraries
… previously was primarily observed in aromatic oxetanes, we decided to prepare model aliphatic oxetanes with a conformationally unconstrained or "flexible" methyl group based on the <em>Diels-Alder</em> adducts of cyclohexadiene or cyclopentadiene with methyl vinyl ketone. Upon addition of an …
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Applications of C₂-symmetric bis(azaferrocenes) in asymmetric copper-catalyzed reactions
… complex also catalyzes the ring expansion of oxetanes into tetrahydrofurans with high stereoselection. In the optimization process, we have developed a new hindered diazo ester that may also prove useful in other asymmetric carbene transfer processes. With the catalyst controlling the …
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TOOLS AND STRATEGIES FOR THE SYNTHESIS OF PHARMACEUTICAL ACTIVE COMPOUNDS
… established a reasonable scope for both alkynyl oxetanes and functional aromatic amines. Furthermore, the further derivatization of selected γ-amino alcohols demonstrates the synthetic potential of these chiral building blocks, which could diversify the range of chiral intermediates valuable for …
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Approaches Towards the Synthesis of Bradyoxetin
Quorum sensing bacteria produce and release chemical signal molecules (like N-acyl homoserine lactones, AHL) that increase in concentration as a function of cell density. The responses cover a large spectrum of process such as the virulence in Staphylococcus aureus, competence for DNA-uptake in …