Search Results - "Brinker, Udo H."

Photochemical Generation and Reactivity of Carbenes within an Organic Cavitand and Capsule: Photochemistry of Adamantanediazirines by Gupta, Shipra, Choudhury, Rajib, Krois, Daniel, Wagner, Gerald, Brinker, Udo H, Ramamurthy, V

“…Chemical behavior of carbenes (adamantylidenes) generated by photolysis of adamantanediazirines has been investigated while they were incarcerated within an…”
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Carbene Routes to Cyclopropatetrahedrane by Rosenberg, Murray G., Brinker, Udo H.

“…The formation of cyclopropatetrahedrane (tetracyclo­[2.1.0.01,3.02,4]­pentane) via four different carbene reactions is computed using the…”
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Tricyclo[2.1.0.02,5]pent-3-ylidene: Stereoelectronic Control of Bridge-Flapping within a Nonclassical Nucleophilic Carbene by Rosenberg, Murray G, Brinker, Udo H

“…Tricyclo­[2.1.0.02,5]­pent-3-ylidene is a carbene foreseen to rearrange to pyramidane (c-C4H4)­C, a highly strained molecule featuring an inverted C atom…”
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Bent Singlet Cyclobutylcarbene: Computed Geometry, Properties, and Product Selectivity of a Nonclassical Carbene by Rosenberg, Murray G, Brinker, Udo H

“…Ab initio computations of cyclobutylcarbene (c-C4H7CH) were performed using the UMP4­(fc)/6-311++G­(2df,2p)//UMP2­(full)/6-311++G­(d,p) theoretical model. The…”
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Controllable Selective Functionalization of a Cavitand via Solid State Photolysis of an Encapsulated Phenyl Azide by Wagner, Gerald, Arion, Vladimir B, Brecker, Lothar, Krantz, Carsten, Mieusset, Jean-Luc, Brinker, Udo H

“…Phenyl azide (1) has been encapsulated within cavitand 2 to form a 1:1 complex of 1@2 in the solid state. Subsequent irradiation affords two diastereomeric…”
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Competitive 1,2‑C Atom Shifts in the Strained Carbene Spiro[3.3]hept-1-ylidene Explained by Distinct Ring-Puckered Conformers by Rosenberg, Murray G, Schrievers, Theodor, Brinker, Udo H

“…Spiro­[3.3]­hept-1-ylidene is a markedly strained carbene reaction intermediate that was generated by high-vacuum flash pyrolysis (HVFP) of the corresponding…”
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Bromination and Accompanying Rearrangement of the Polycyclic Oxetane 2,4-Oxytwistane by Rosenberg, Murray G, Billing, Peter, Brecker, Lothar, Brinker, Udo H

“…Bromination of the polycyclic oxetane 2,4-oxytwistane (rac-(1R,3S,4R,7S,9R,11S)-2-oxatetracyclo[5.3.1.03,11.04,9]undecane) was undertaken in order to form…”
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Mild One-step Synthesis of Dibromo Compounds from Cyclic Ethers by Billing, Peter, Brinker, Udo H

“…A novel one-step method for mildly converting cyclic ethers into dibromo compounds is reported. Alcohols, oximes, aldehydes, and ketones are known to react…”
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Cucurbituril Adamantanediazirine Complexes and Consequential Carbene Chemistry by Gupta, Shipra, Choudhury, Rajib, Krois, Daniel, Brinker, Udo H, Ramamurthy, V

“…Adamantanediazirines, precursors of adamantanylidenes, form 1:1 complexes (guest to host) with cucurbit[7]uril and cucurbit[8]uril and a 3:1 complex with a Pd…”
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The Carbene Reactivity Surface:  A Classification by Mieusset, Jean-Luc, Brinker, Udo H

“…A new two-dimensional classification of singlet carbenes based on the difference in reactivity of their insertion reactions into the C−H bonds of acetonitrile…”
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Intermolecular Reactions of a Foiled Carbene with Carbonyl Compounds: The Effects of Trishomocyclopropyl Stabilization by Apeland, Ingrid Malene, Rosenberg, Murray G., Arion, Vladimir B., Kählig, Hanspeter, Brinker, Udo H.

“…endo-Tricyclo­[3.2.1.02,4]­oct-8-ylidene is a foiled carbene reaction intermediate. It was generated by thermolyzing Δ3-1,3,4-oxadiazoline precursors dissolved…”
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Molecular Dynamics Simulations of β-Cyclodextrin−Aziadamantane Complexes in Water by Sellner, Bernhard, Zifferer, Gerhard, Kornherr, Andreas, Krois, Daniel, Brinker, Udo H

“…Force-field-based atomistic simulations of host−guest supramolecular complexes between β-cyclodextrin and several aziadamantane derivatives have been analyzed…”
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Intra- and Intermolecular Reaction Selectivities of γ-Substituted Adamantanylidenes by Knoll, Wolfgang, Kaneno, Daisuke, Bobek, Michael M, Brecker, Lothar, Rosenberg, Murray G, Tomoda, Shuji, Brinker, Udo H

“…A study of adamantanylidenes having a γ-substituent (R) was undertaken to gauge how inductive and steric effects of remotely positioned functional groups…”
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Probing the Nature and Extent of Stabilization within Foiled Carbenes: Homoallylic Participation by a Neighboring Cyclopropane Ring by Apeland, Ingrid Malene, Kählig, Hanspeter, Lorbeer, Eberhard, Brinker, Udo H

“…Oxadiazoline 6 was synthesized to generate endo-tricyclo[3.2.1.02,4]octan-8-ylidene (3) by either photolysis or thermolysis. Diastereomer 6a thermally…”
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Study of the Structure and Photochemical Decomposition of Azidoadamantanes Entrapped in α- and β-Cyclodextrin by Brinker, Udo H., Walla, Peter, Krois, Daniel, Arion, Vladimir B.

“…Photolysis of 1‐azidoadamantane (1), either in its neat state or in alkane solution, yields the dimeric product 4. In contrast, amino alcohol 3 is formed as…”
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2H-Azirines from a Concerted Addition of Alkylcarbenes to Nitrile Groups by Knoll, Wolfgang, Mieusset, Jean-Luc, Arion, Vladimir B, Brecker, Lothar, Brinker, Udo H

“…Photolysis of aziadamantanes in the presence of fumaronitrile (FN) unexpectedly afforded conjugated 2H-azirines resulting from addition of the carbene to the…”
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Substituent Effects on the Ring-Opening Mechanism of Lithium Bromocyclopropylidenoids to Allenes by Azizoglu, Akin, Balci, Metin, Mieusset, Jean-Luc, Brinker, Udo H

“…The ring-opening reactions of lithium bromocyclopropylidenoids to allenes have been investigated computationally at the B3LYP/6-31G(d) level of theory…”
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Conformations and Reactions of Bicyclo[3.2.1]oct-6-en-8-ylidene by Brinker, Udo H, Bespokoev, Alexander A, Reisenauer, Hans Peter, Schreiner, Peter R

“…Bicyclo­[3.2.1]­oct-6-en-8-ylidene (1) can assume either the conformation of “classical” carbene 1a or that of foiled carbene 1b in which the divalent carbon…”
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Carbene−Alkene Complexes between a Nucleophilic Carbene and Electron-Poor Alkenes by Mieusset, Jean-Luc, Abraham, Michael, Brinker, Udo H

“…Spirooxadiazoline 5 is a clean thermal source of tricyclo[6.2.1.02,7]undec-9-en-11-ylidene (7), a typical foiled carbene. Species 7 can be trapped efficiently…”
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Addition of Dichloro- and Dibromocarbene to 1,2-Diphenylcyclobutene by Wagner, Robert A, Weber, Jürgen, Brinker, Udo H

“…1,2-Diphenylcyclobutene (7) was reacted with dibromo- and dichlorocarbene, both generated via three different methods. 1,3-Diphenyl-2-halocyclopenta-1,3-dienes…”
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