Search Results - "Rosenberg, Murray G."

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

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…”
Get full text

Inter- and Innermolecular Reactions of Chloro(phenyl)carbene by Rosenberg, Murray G, Brinker, Udo H

“…Supramolecular photolyses of 3-chloro-3-phenyl-3H-diazirine (8) were performed within cyclodextrin (CyD) hosts to determine whether these toroidal inclusion…”
Get full text

Synthesis of (bicyclo[2.2.0]hex-1-yl)methanal and Arrhenius parameters for thermal rearrangement: Radical stabilizing effect of aldehyde substituents on highly strained CC bonds by Nowienski, Anita, Rosenberg, Murray G., Brinker, Udo H.

“…[Display omitted] •First synthesis of (bicyclo[2.2.0]hex-1-yl)methanal.•Arrhenius parameters for thermal rearrangement to 2-methylenehex-5-enal.•Radical…”
Get full text

Synthesis of (bicyclo[2.2.0]hex-1-yl)methanal and Arrhenius parameters for thermal rearrangement: Radical stabilizing effect of aldehyde substituents on highly strained C C bonds by Nowienski, Anita, Rosenberg, Murray G., Brinker, Udo H.

Get full text

Reversal of Diastereoselectivities in Intra- and Intermolecular Reactions of 2-Adamantanylidenes Primarily Caused by Electron-Donating and Electron- Withdrawing Substituents on C5 by Knoll, Wolfgang, Bobek, Michael M, Kalchhauser, Hermann, Rosenberg, Murray G, Brinker, Udo H

“…A reversal of diastereoselectivity was observed for novel 5-(trimethylsilyl)adamantan-2-ylidene (1c) with regard to 5-hydroxyadamantan-2-ylidene (1a)…”
Get full text

Diastereoselective carbenes: Stereoelectronic control of bent singlet trans-2′-substituted cyclobutylcarbenes by Rosenberg, Murray G., Brinker, Udo H.

“…[Display omitted] •Singlet cyclobutylcarbenes have :CH-groups that are bent toward the c-C4H7 rings.•Bending direction for trans-2′-substituted derivatives…”
Get full text

Insights into Regioselective Oxy (−O−) and Imino (−NH−) Group Insertions of 3-Nortricyclanone by Rosenberg, Murray G, Haslinger, Ulrike, Brinker, Udo H

“…Lactam 4-azatricyclo[3.2.1.02,7]octan-3-one (16a) was proven to be formed in a previously reported reaction that claimed production of lactam…”
Get full text

Effect of Supramolecular Inclusion on the Selectivity of 3-Nortricyclanylidene by Rosenberg, Murray G, Brinker, Udo H

Get full text

Supramolecular carbene chemistry by Rosenberg, Murray G

“…Attempts were made to control the outcome of carbene reactions by including the corresponding 3H-diazirine precursors within the cavities of cyclodextrins…”
Get full text

Supramolecular carbene chemistry by Rosenberg, Murray G

“…Attempts were made to control the outcome of carbene reactions by including the corresponding 3H-diazirine precursors within the cavities of cyclodextrins…”
Get full text

Carbenes generated within cyclodextrins and zeolites by Rosenberg, Murray G., Brinker, Udo H.

Get full text

Carbenes in constrained systems. 4. Encapsulation of an asymmetric diazirine: Reactivity of 2-methylcyclohexanylidene by Rosenberg, Murray G., Kam, Steven M., Brinker, Udo H.

“…2-Methylcyclohexanylidene was generated from the corresponding diazirine within the cavities of α-, β- and γ-cyclodextrin by photolysis in the solid state. To…”
Get full text

Synthesis of a sterically congested diazirine: 2-azi-camphane by Kupfer, René, Rosenberg, Murray G., Brinker, Udo H.

“…The synthesis of 2-azi-camphane has been achieved despite the fact that the spirocyclic carbon center is sterically congested. Although the yield is somewhat…”
Get full text

Constrained Carbenes by Rosenberg, Murray G., Brinker, Udo H.

“…Carbenes traditionally have been used for cyclopropane synthesis but little else, since their reactions are difficult to control. However, the burgeoning…”
Get full text