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Showing 1 to 9 of 9 for “"indenes"”.
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The Development of 2,3-Diarylindenes as Integrated Fluorescent Estrogens
A series of hydroxylated 2,3-diarylindenes were prepared and evaluated as fluorescent ligands for the estrogen receptor. A practical fluorescent estrogen would allow cell-by-cell quantitation of the estrogen receptor in breast tumors, providing a prognostic tool for the clinical differentiation of …
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Asymmetric hydrogenation of unfunctionalized trisubstituted and tetrasubstituted olefins
… a number of fully substituted unfunctionalized indenes proceeded cleanly to give mostly cis products with ee's of 78 - 99%; rates and enantioselectivities increased with increasing pressure. Again, deuteration experiments showed that isomerization processes may occur under the reaction …
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Developments in Nickel-catalyzed Transfer Hydrocyanation Reactions and Novel Skeletal Editing Strategies through Nitrogen Atom Insertion
… as well as pyrroles into pyrimidines, indenes into isoquinolines, or cyclopentadienes into pyridines (see Scheme II). The initial reaction design was based on the mechanistic proposal for the previously established Ciamician-Dennstedt rearrangement and the implementation of in-situ …
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Preparation of benzoenyne -allenes, enyne -isocyanates and enyne -carbodiimides and their applications in the synthesis of polycyclic aromatic hydrocarbons and heterocycles
… occurred preferentially to form 1H-cyclobut[a]indenes. Competition from the intramolecular [2+2] cycloaddition reaction could be avoided with the non-chlorinated benzoenyne-allenes, providing direct access to novel polycyclic aromatic hydrocarbons. Several indeno-fused 4,5-diarylphenanrenes …
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Some chemistry of orthomanganated ketones
… orthomanganated ketones provided new routes to indenes in their reaction with methyl acrylate. Thus (4) gave methyl 3-methyl-5,6,7-trimethoxyindene-2-carboxylate (53), and (2) and (3) gave the corresponding indenes [(51) and (49)]. The thiophene derivative …
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Synthesis of derivatives of 4H-cyclopenta[ def]phenanthren-4-one and development of synthetic strategies for the polycyclic aromatic hydrocarbons with carbon frameworks represented on the surface of C60
… and 80 afforded the two isomeric 1H-cyclobut[a]indenes 97a and 97b via the [2+2] cycloaddition reaction of the chlorinated benzoenyne-allene.
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Synthesis, Properties, and Reactivity of Pentafluorophenyl Substituted Cyclopentadienes and Their Transition Metal Complexes
… C6F5- and C5F4N-substituted cyclopentadienes and indenes are measured using 19F NMR spectroscopy. The electron-withdrawing fluorinated aryl groups have a substantial acidifying effect. The identity and number of substituents (C6F5, C5F4N, CH3, and t-Bu), the position of the substituents on the …
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Complejos metal-carbeno de Fischer nitrogenados: Mecanismos fotoquímicos y propiedades fotofísicas
Esta memoria se centra en el comportamiento de complejos iminocarbeno de Fischer frente a la luz. Se plantearon como objetivos los estudios de: la estereoselectividad en reacciones con alquenos para formar 1-pirrolinas, la influencia de los sustituyentes en la fotorreactividad y las propiedades …