Zobrazeno 1 - 10
of 145
pro vyhledávání: '"Stephen P. Marsden"'
Autor:
Tarn C. Johnson, Stephen P. Marsden
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 12, Iss 1, Pp 1-4 (2016)
A convenient, one-pot, two-component synthesis of 2-(1-amidoalkyl)pyridines is reported, based upon the substitution of suitably-activated pyridine N-oxides by azlactone nucleophiles, followed by decarboxylative azlactone ring-opening. The synthesis
Externí odkaz:
https://doaj.org/article/a33c9d8df5a543f49bfe06ad32975ad9
Autor:
Pascal C. Ducept, Stephen P. Marsden
Publikováno v:
ARKIVOC, Vol 2002, Iss 6, Pp 22-34 (2002)
Externí odkaz:
https://doaj.org/article/78b347bc3183494f88dc562bd20438e0
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 4, Iss 1, p 8 (2008)
BackgroundTashiromine (1) is a naturally occurring indolizidine alkaloid. It has been the subject of thirteen successful total syntheses to date. Our own approach centres on the stereoselective construction of the indolizidine core by capture of an e
Externí odkaz:
https://doaj.org/article/8aa222e6739941ddb324d591bcbf539c
Autor:
Stephen P. Marsden, Pascal C. Ducept
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 1, Iss 1, p 5 (2005)
BackgroundAllenylsilanes are useful intermediates in organic synthesis. An attractive, convergent but little used approach for their synthesis is the alkylidenation of stable silylketenes. Reactions thus far have been limited to the use of unsubstitu
Externí odkaz:
https://doaj.org/article/d0ae03fa5961489abb989e3840279cdc
Autor:
Travis S. Metcalfe, Klaus G. Strassmeier, Ilya V. Ilyin, Jennifer L. van Saders, Thomas R. Ayres, Adam J. Finley, Oleg Kochukhov, Pascal Petit, Victor See, Keivan G. Stassun, Sandra V. Jeffers, Stephen C. Marsden, Julien Morin, Aline A. Vidotto
Publikováno v:
The Astrophysical Journal Letters, Vol 948, Iss 1, p L6 (2023)
During the first half of their main-sequence lifetimes, stars rapidly lose angular momentum to their magnetized winds, a process known as magnetic braking. Recent observations suggest a substantial decrease in the magnetic braking efficiency when sta
Externí odkaz:
https://doaj.org/article/a3a09f0e714f4e8ebaaae620aaaee3dd
Autor:
Travis S. Metcalfe, Derek Buzasi, Daniel Huber, Marc H. Pinsonneault, Jennifer L. van Saders, Thomas R. Ayres, Sarbani Basu, Jeremy J. Drake, Ricky Egeland, Oleg Kochukhov, Pascal Petit, Steven H. Saar, Victor See, Keivan G. Stassun, Yaguang Li, Timothy R. Bedding, Sylvain N. Breton, Adam J. Finley, Rafael A. García, Hans Kjeldsen, Martin B. Nielsen, J. M. Joel Ong, Jakob L. Rørsted, Amalie Stokholm, Mark L. Winther, Catherine A. Clark, Diego Godoy-Rivera, Ilya V. Ilyin, Klaus G. Strassmeier, Sandra V. Jeffers, Stephen C. Marsden, Aline A. Vidotto, Sallie Baliunas, Willie Soon
Publikováno v:
The Astronomical Journal, Vol 166, Iss 4, p 167 (2023)
The bright star λ Ser hosts a hot Neptune with a minimum mass of 13.6 M _⊕ and a 15.5 day orbit. It also appears to be a solar analog, with a mean rotation period of 25.8 days and surface differential rotation very similar to the Sun. We aim to ch
Externí odkaz:
https://doaj.org/article/cb097db1977143629195bc3f6d94b093
Autor:
Alexis Heitzmann, George Zhou, Samuel N. Quinn, Chelsea X. Huang, Jiayin Dong, L. G. Bouma, Rebekah I. Dawson, Stephen C. Marsden, Duncan Wright, Pascal Petit, Karen A. Collins, Khalid Barkaoui, Robert A. Wittenmyer, Edward Gillen, Rafael Brahm, Melissa Hobson, Coel Hellier, Carl Ziegler, César Briceño, Nicholas Law, Andrew W. Mann, Steve B. Howell, Crystal L. Gnilka, Colin Littlefield, David W. Latham, Jack J. Lissauer, Elisabeth R. Newton, Daniel M. Krolikowski, Ronan Kerr, Rayna Rampalli, Stephanie T. Douglas, Nora L. Eisner, Nathalie Guedj, Guoyou Sun, Martin Smit, Marc Huten, Thorsten Eschweiler, Lyu Abe, Tristan Guillot, George Ricker, Roland Vanderspek, Sara Seager, Jon M. Jenkins, Eric B. Ting, Joshua N. Winn, David R. Ciardi, Andrew M. Vanderburg, Christopher J. Burke, David R. Rodriguez, Tansu Daylan
Publikováno v:
The Astronomical Journal, Vol 165, Iss 3, p 121 (2023)
We report the discovery of TOI-4562b (TIC-349576261), a Jovian planet orbiting a young F7V-type star, younger than the Praesepe/Hyades clusters (
Externí odkaz:
https://doaj.org/article/ee982f483b9e4c7b8e3d4815788d3925
Autor:
Alexandra Hindle, Krzysztof Baj, Jonathan A. Iggo, Daniel J. Cox, Christopher M. Pask, Adam Nelson, Stephen P. Marsden
Publikováno v:
Chemical Communications. 59:6239-6242
A modular approach to the synthesis of twisted bicyclic amides and anilines allows for variation in the degree of overlap between the nitrogen lone pair and the relevant π-system, and hence the structural and physical properties of the products.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c0cd96ee3298db6f15cb000f5643fd56
https://doi.org/10.1039/d3cc01470c
https://doi.org/10.1039/d3cc01470c
Autor:
Ephraim A. Okolo, Axel Pahl, Sonja Sievers, Christopher M. Pask, Adam Nelson, Stephen P. Marsden
Publikováno v:
Chemistry – A European Journal. 29
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5eed539268718db2e63126bbe4769917
https://doi.org/10.1002/chem.202203992
https://doi.org/10.1002/chem.202203992
Autor:
Tarn C. Johnson, Stephen P. Marsden
Publikováno v:
The Journal of organic chemistry. 87(21)
A convenient and simple three-component synthesis of substituted pyridylacetic acid derivatives is reported. The approach centers on the dual reactivity of Meldrum's acid derivatives, initially as nucleophiles to perform substitution on activated pyr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::10eef1305299f7a047e83a2fe279fa63
https://pubmed.ncbi.nlm.nih.gov/36257810
https://pubmed.ncbi.nlm.nih.gov/36257810