Search Results - "Wnuk, Stanislaw F."

Nitrogen-Centered Radicals Derived from Azidonucleosides by Reyes, Yahaira, Adhikary, Amitava, Wnuk, Stanislaw F

“…Azido-modified nucleosides have been extensively explored as substrates for click chemistry and the metabolic labeling of DNA and RNA. These compounds are also…”
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Molecular mass growth through ring expansion in polycyclic aromatic hydrocarbons via radical–radical reactions by Zhao, Long, Kaiser, Ralf. I., Lu, Wenchao, Xu, Bo, Ahmed, Musahid, Morozov, Alexander N., Mebel, Alexander M., Howlader, A. Hasan, Wnuk, Stanislaw F.

“…Polycyclic aromatic hydrocarbons (PAHs) represent key molecular building blocks leading to carbonaceous nanoparticles identified in combustion systems and…”
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Modification of purine and pyrimidine nucleosides by direct C-H bond activation by Liang, Yong, Wnuk, Stanislaw F

“…Transition metal-catalyzed modifications of the activated heterocyclic bases of nucleosides as well as DNA or RNA fragments employing traditional…”
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Gas phase synthesis of the C40 nano bowl C40H10 by Tuli, Lotefa B., Goettl, Shane J., Turner, Andrew M., Howlader, A. Hasan, Hemberger, Patrick, Wnuk, Stanislaw F., Guo, Tianjian, Mebel, Alexander M., Kaiser, Ralf I.

“…Nanobowls represent vital molecular building blocks of end-capped nanotubes and fullerenes detected in combustion systems and in deep space such as toward the…”
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Gas-Phase Synthesis of Coronene through Stepwise Directed Ring Annulation by Goettl, Shane J., Tuli, Lotefa B., Turner, Andrew M., Reyes, Yahaira, Howlader, A. Hasan, Wnuk, Stanislaw F., Hemberger, Patrick, Mebel, Alexander M., Kaiser, Ralf I.

“…Molecular beam experiments together with electronic structure calculations provide the first evidence of a complex network of elementary gas-phase reactions…”
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Gas phase synthesis of [4]-helicene by Zhao, Long, Kaiser, Ralf I., Xu, Bo, Ablikim, Utuq, Lu, Wenchao, Ahmed, Musahid, Evseev, Mikhail M., Bashkirov, Eugene K., Azyazov, Valeriy N., Zagidullin, Marsel V., Morozov, Alexander N., Howlader, A. Hasan, Wnuk, Stanislaw F., Mebel, Alexander M., Joshi, Dharati, Veber, Gregory, Fischer, Felix R.

“…A synthetic route to racemic helicenes via a vinylacetylene mediated gas phase chemistry involving elementary reactions with aryl radicals is presented. In…”
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Model Substrate/Inactivation Reactions for MoaA and Ribonucleotide Reductases: Loss of Bromo, Chloro, or Tosylate Groups from C2 of 1,5-Dideoxyhomoribofuranoses upon Generation of an α-Oxy Radical at C3 by Wnuk, Stanislaw F, Mudgal, Mukesh M, Nowak, Ireneusz, Robins, Morris J

“…We report studies on radical-initiated fragmentations of model 1,5-dideoxyhomoribofuranose derivatives with bromo, chloro, and tosyloxy substituents on C2. The…”
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Azido derivatives of sesquiterpene lactones: Synthesis, anticancer proliferation, and chemistry of nitrogen-centered radicals by Reyes, Yahaira, Larrey, Enoch K., Pathak, Rupak, Veisaga, Maria L., Barbieri, Manuel A., Ward, Samuel, Kumar, Anil, Sevilla, Michael D., Adhikary, Amitava, Wnuk, Stanislaw F.

“…[Display omitted] •Two types of azido modified sesquiterpene lactones were synthesized.•Azido parthenolide suppresses cancer cell proliferation more than…”
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One-Electron Oxidation of Gemcitabine and Analogs: Mechanism of Formation of C3′ and C2′ Sugar Radicals by Adhikary, Amitava, Kumar, Anil, Rayala, Ramanjaneyulu, Hindi, Ragda M, Adhikary, Ananya, Wnuk, Stanislaw F, Sevilla, Michael D

“…Gemcitabine is a modified cytidine analog having two fluorine atoms at the 2′-position of the ribose ring. It has been proposed that gemcitabine inhibits RNR…”
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Construction of quaternary stereocenters at carbon 2′ of nucleosides by Liang, Yong, Smerznak, Ellie, Wnuk, Stanislaw F.

“…The non-natural nucleosides with a quaternary stereogenic center at C2′ are crucial to drug discovery. They have become a cornerstone for the treatment of…”
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6-azido and 6-azidomethyl uracil nucleosides by Reyes, Yahaira, Mebel, Alexander, Wnuk, Stanislaw F

“…Azido nucleosides have been utilized for click reactions, metabolic incorporation into cellular DNA, and fluorescent imaging of live cells. Two classes of…”
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Chemoselective Transfer of Allyl or Phenyl Group from Allyl(phenyl)germanes in Pd-catalyzed Reactions with Aryl Halides by Pitteloud, Jean-Philippe, Liang, Yong, Wnuk, Stanislaw F

“…Treatment of chloro(phenyl)germanes with allylmagnesium bromide yielded allyl(phenyl)germanes. Coupling of the allyl(phenyl)germanes with aryl halides in…”
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Radical-Mediated Silyl- and Germyldesulfonylation of Vinyl and (α-Fluoro)vinyl Sulfones:  Application of Tris(trimethylsilyl)silanes and Tris(trimethylsilyl)germanes in Pd-Catalyzed Couplings by Wnuk, Stanislaw F, Garcia, Pedro I, Wang, Zhizhong

“…Radical-mediated silyl- and germyldesulfonylations of various vinyl and (α-fluoro)vinyl sulfones with tris(trimethylsilyl)silane and germanium hydrides provide…”
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Palladium-Catalyzed Direct Arylation of 5‑Halouracils and 5‑Halouracil Nucleosides with Arenes and Heteroarenes Promoted by TBAF by Liang, Yong, Gloudeman, Jennifer, Wnuk, Stanislaw F

“…The 1-N-benzyl-5-iodo­(or bromo)­uracil undergoes Pd-catalyzed [Pd2(dba)3] direct arylation with benzene and other simple arenes in the presence of TBAF in DMF…”
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Pyrimidine Nucleosides with a Reactive (β-Chlorovinyl)sulfone or (β-Keto)sulfone Group at the C5 Position, Their Reactions with Nucleophiles and Electrophiles, and Their Polymerase-Catalyzed Incorporation into DNA by Suzol, Sazzad H, Howlader, A. Hasan, Wen, Zhiwei, Ren, Yaou, Laverde, Eduardo E, Garcia, Carol, Liu, Yuan, Wnuk, Stanislaw F

“…Transition-metal-catalyzed chlorosulfonylation of 5-ethynylpyrimidine nucleosides provided (E)-5-(β-chlorovinyl)­sulfones A, which undergo nucleophilic…”
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Correction to Transition-Metal-Free Cross-Coupling of Aryl Halides with Arylstannanes by He, Qing, Wang, Wenli, Liang, Yong, Zhang, Zunting, Wnuk, Stanislaw F

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Exotic Reaction Dynamics in the Gas-Phase Preparation of Anthracene (C14H10) via Spiroaromatic Radical Transients in the Indenyl–Cyclopentadienyl Radical–Radical Reaction by He, Chao, Kaiser, Ralf I., Lu, Wenchao, Ahmed, Musahid, Reyes, Yahaira, Wnuk, Stanislaw F., Mebel, Alexander M.

“…The gas-phase reaction between the 1-indenyl (C9H7 •) radical and the cyclopentadienyl (C5H5 •) radical has been investigated for the first time using…”
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Pathways of the Dissociative Electron Attachment Observed in 5- and 6‑Azidomethyluracil Nucleosides: Nitrogen (N2) Elimination vs Azide Anion (N3 –) Elimination by Adjei, Daniel, Reyes, Yahaira, Kumar, Anil, Ward, Samuel, Denisov, Sergey A., Alahmadi, Moaadh, Sevilla, Michael D., Wnuk, Stanislaw F., Mostafavi, Mehran, Adhikary, Amitava

“…5-Azidomethyl-2′-deoxyuridine (5-AmdU, 1) has been successfully employed for the metabolic labeling of DNA and fluorescent imaging of live cells. 5-AmdU also…”
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Application of Vinyl Tris(trimethylsilyl)germanes in Pd-Catalyzed Couplings by Wang, Zhizhong, Wnuk, Stanislaw F

“…The oxidative treatment of vinyltris(trimethylsilyl)germanes with hydrogen peroxide (NaOH/H2O/THF) or tert-butyl peroxide (KH/THF) generates reactive germanol…”
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Transition-Metal-Free Cross-Coupling of Aryl Halides with Arylstannanes by He, Qing, Wang, Liwen, Liang, Yong, Zhang, Zunting, Wnuk, Stanislaw F

“…Transition-metal-free LiCl-promoted cross-coupling reactions of tetraphenyltin, trichlorophenyl-, dichlorodiphenyl-, and chlorotriphenyl­stannanes with aryl…”
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