Výsledky vyhledávání - "Ryan R. Walvoord"

Synthesis of 7-Aminocoumarins from 7-Hydroxycoumarins via Amide Smiles Rearrangement

Autor: Daniel S. Lippe, Omar Elghawy, Adam M. Zucker, Evan S. K. Yanagawa, Erin Mathews, Yusef G. Ahmed, Paige N. D’Elia, Sabrina Bimson, Ryan R. Walvoord

Publikováno v: ACS omega. 7(39)

N-Substituted 7-aminocoumarins can be synthesized from readily available 7-hydroxycoumarins via alkylation with α-bromoacetamides and subsequent tandem O → N Smiles rearrangement-amide hydrolysis. The key rearrangement sequence proceeds under mild

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c9427433d3d00f3a2c9ed5205e3a3427
https://pubmed.ncbi.nlm.nih.gov/36211046

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Ligand-Directed Approach to Activity-Based Sensing: Developing Palladacycle Fluorescent Probes That Enable Endogenous Carbon Monoxide Detection

Autor: Ryan R. Walvoord, Christopher J. Chang, Kevin J. Bruemmer, Kohei Ueno, Thomas F. Brewer, Denis Höfler, Minoru Saitoe, Samir P. Rezgui, Jonah W. Jurss, Brian W. Michel, Johannes Morstein

Publikováno v: Journal of the American Chemical Society. 142:15917-15930

Carbon monoxide (CO) is an emerging gasotransmitter and reactive carbon species with broad anti-inflammatory, cytoprotective, and neurotransmitter functions along with therapeutic potential for the treatment of cardiovascular diseases. The study of C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::302ab5097c856c93ad376a278a36899e
https://doi.org/10.1021/jacs.0c06405

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Cinchonidinium acetate as a convenient catalyst for the asymmetric synthesis of cis-stilbenediamines

Autor: Ryan R. Walvoord, Marisa C. Kozlowski

Publikováno v: Tetrahedron Letters. 56:3070-3074

Inexpensive and readily available cinchonidinium acetate is an effective catalyst for the syn-selective aza-Henry reaction of arylnitromethanes and aryl imines. The resulting masked cis-stilbenediamine products are produced in excellent diastereosele

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::00ca14a1bbdb4a70c4b453fa064c0438
https://doi.org/10.1016/j.tetlet.2014.12.105

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Development of a General Aza-Cope Reaction Trigger Applied to Fluorescence Imaging of Formaldehyde in Living Cells

Autor: Lucas B. Pontel, Christopher J. Chang, Niek Wit, Thomas F. Brewer, Guillermo Burgos-Barragan, Ketan J. Patel, Kevin J. Bruemmer, Ryan R. Walvoord

Publikováno v: Bruemmer, KJ; Walvoord, RR; Brewer, TF; Burgos-Barragan, G; Wit, N; Pontel, LB; et al.(2017). Development of a General Aza-Cope Reaction Trigger Applied to Fluorescence Imaging of Formaldehyde in Living Cells. Journal of the American Chemical Society, 139(15), 5338-5350. doi: 10.1021/jacs.6b12460. UC Berkeley: Retrieved from: http://www.escholarship.org/uc/item/8tj5s7r7
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Consejo Nacional de Investigaciones Científicas y Técnicas
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Journal of the American Chemical Society, vol 139, iss 15
Journal of the American Chemical Society

Formaldehyde (FA) is a reactive signaling molecule that is continuously produced through a number of central biological pathways spanning epigenetics to one-carbon metabolism. On the other hand, aberrant, elevated levels of FA are implicated in disea

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f24371b4e75a3f7454d65fdbd7b34f50
https://pubs.acs.org/doi/abs/10.1021/jacs.6b12460

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Nitroethylation of Vinyl Triflates and Bromides

Autor: Sergei Tcyrulnikov, Ryan R. Walvoord, Rosaura Padilla-Salinas, Marisa C. Kozlowski

Publikováno v: Organic Letters. 15:3966-3969

A two-carbon homologation of vinyl triflates and bromides for the synthesis of homoallylic nitro products is described. This palladium-catalyzed double coupling of nitromethane exploits the anion stabilizing and leaving group properties of nitrometha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0b2764398ac560dc3b136c4b996a639
https://doi.org/10.1021/ol401747u

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Aerobic Copper-Catalyzed Organic Reactions

Autor: Scott E. Allen, Marisa C. Kozlowski, Ryan R. Walvoord, Rosaura Padilla-Salinas

Publikováno v: Chemical Reviews. 113:6234-6458

The chemistry of copper is extremely rich because it can easily access Cu0, CuI, CuII, and CuIII oxidation states allowing it to act through one-electron or two-electron processes. As a result, both radical pathways and powerful two-electron bond for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e251d634de7a000fc8045e76da425db3
https://doi.org/10.1021/cr300527g

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Palladium-Catalyzed Nitromethylation of Aryl Halides: An Orthogonal Formylation Equivalent

Autor: Simon Berritt, Ryan R. Walvoord, Marisa C. Kozlowski

Publikováno v: Organic Letters. 14:4086-4089

An efficient cross-coupling reaction of aryl halides and nitromethane was developed with the use of parallel microscale experimentation. The arylnitromethane products are precursors for numerous useful synthetic products. An efficient method for thei

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0ae6c67508972f89dcaf1f8df6f7e377
https://doi.org/10.1021/ol301713j

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ChemInform Abstract: Cinchonidinium Acetate as a Convenient Catalyst for the Asymmetric Synthesis of cis-Stilbenediamines

Autor: Marisa C. Kozlowski, Ryan R. Walvoord

Publikováno v: ChemInform. 46

The scalable procedure provides cis-stilbenediamines with moderate enatiomeric excess which may be improved via recrystallization.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3b94f74e3283664a7695bcf03ce6721f
https://doi.org/10.1002/chin.201539081

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Cinchonidinium acetate as a convenient catalyst for the asymmetric synthesis of

Autor: Ryan R, Walvoord, Marisa C, Kozlowski

Publikováno v: Tetrahedron letters. 56(23)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::15cf12495fcd114a419ca2ee6221538c
https://pubmed.ncbi.nlm.nih.gov/26041941

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