Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Raleigh W. Parrott"'
Autor:
Takaoki Koyanagi, Kate L. Edler, Raleigh W. Parrott II, Shawn R. Hitchcock, Gregory M. Ferrence
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 4, Pp o898-o899 (2010)
In the title compound, C23H31NO2, the lone pair on the nitrogen atom is oriented to facilitate intramolecular hydrogen bonding with the hydroxy group residing on the phenyl substituent. The five-membered ring adopts an envelope confornmation with the
Externí odkaz:
https://doaj.org/article/353e4600c47245bc8ecc978f9ee6d038
Autor:
Alexander E. Anderson, Kate L. Edler, Raleigh W. Parrott II, Shawn R. Hitchcock, Gregory M. Ferrence
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 4, Pp o902-o903 (2010)
The title compound, C21H27NO2, exhibits hydrogen bonding between the phenolic H atom and the heterocyclic N atom. The absolute configuration of the molecule is known from the synthetic procedure.
Externí odkaz:
https://doaj.org/article/07136f654dfc4336a90226e568600197
Autor:
Ian Sean Campbell, Kate L. Edler, Raleigh W. Parrott II, Shawn R. Hitchcock, Gregory M. Ferrence
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 4, Pp o900-o901 (2010)
The title oxazolidine compound, C27H39NO2, was synthesized from N-isopropylnorephedrine. The dihedral angle between the aromatic rings is 70.33 (5)°. The N atom of the heterocycle is oriented to allow intramolecular O—H...N hydrogen bonding with t
Externí odkaz:
https://doaj.org/article/6383ce1d04b7466c8eb51f426a007756
Publikováno v:
Journal of Heterocyclic Chemistry. 45:873-878
A series of oxazolidines have been prepared by condensation of N-isopropyl norephedrine with a variety of salicylaldehyde derivatives. Despite the stereochemical relationship of (1R,2S)-norephedrine with (1R,2S)-ephedrine, the resultant oxazolidines
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e256f5a151320fbb7a0b3fc207db3dcf
https://doi.org/10.1002/jhet.5570450336
https://doi.org/10.1002/jhet.5570450336
Autor:
Raleigh W. Parrott, Delvis D. Dore, Jeromy T. Bentley, Seshanand P. Chandrashekar, Shawn R. Hitchcock, Brittany S. Morgan
Publikováno v:
Tetrahedron: Asymmetry. 19:607-611
A series of tridentate β-hydroxysalicylhydrazone ligands have been prepared from (1R,2S)-ephedrine and (1R,2S)-norephedrine and tested in the catalytic asymmetric addition of diethylzinc to aldehydes. The isolated chemical yields of the addition pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20c90883da9cef40d88442f4780cf8e8
https://doi.org/10.1016/j.tetasy.2008.02.007
https://doi.org/10.1016/j.tetasy.2008.02.007
Autor:
Shawn R. Hitchcock, Raleigh W. Parrott
Publikováno v:
Tetrahedron: Asymmetry. 19:19-26
A family of N -alkylnorephedrine and N -alkylpseudonorephedrine derived ligands were prepared and applied in the asymmetric alkylation of benzaldehyde using diethylzinc. The absolute configuration of the addition product was directed primarily by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea20a6021085a702a1e0eb45916735a8
https://doi.org/10.1016/j.tetasy.2007.11.027
https://doi.org/10.1016/j.tetasy.2007.11.027
Autor:
Shawn R. Hitchcock, Raleigh W. Parrott
Publikováno v:
Tetrahedron: Asymmetry. 18:377-382
A series of oxazolidines have been prepared by reaction of either (1 R ,2 S )-ephedrine or (1 S ,2 S )-pseudoephedrine with salicylaldehyde derivatives. The resultant oxazolidines were used as catalytic ligands in the addition of diethylzinc to a var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d4a50128184cf795e8060b03bb4d850
https://doi.org/10.1016/j.tetasy.2006.12.029
https://doi.org/10.1016/j.tetasy.2006.12.029
Autor:
Alexandro Dominguez, Shawn R. Hitchcock, Jonathan A. Groeper, Jennifer M. Finefield, Seshanand P. Chandrashekar, Raleigh W. Parrott, Trisha R. Hoover
Publikováno v:
Tetrahedron: Asymmetry. 17:1831-1841
Oxadiazinanones derived from (1 R ,2 S )-ephedrine and (1 R ,2 S )-norephedrine were employed in the asymmetric α-halo aldol reaction. The optimized yields and diastereoselectivities for the ephedrine based oxadiazinanone aldol reaction ranged from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::342f61c12a1f0e8aad25a258cfe7fed5
https://doi.org/10.1016/j.tetasy.2006.06.036
https://doi.org/10.1016/j.tetasy.2006.06.036
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 4, Pp o900-o901 (2010)
Acta Crystallographica Section E: Structure Reports
Acta Crystallographica Section E: Structure Reports
The title oxazolidine compound, C27H39NO2, was synthesized from N-isopropylnorephedrine. The dihedral angle between the aromatic rings is 70.33 (5)°. The N atom of the heterocycle is oriented to allow intramolecular O—H...N hydrogen bonding with t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ef9495300c44e5234f50dc65af2b39c
http://scripts.iucr.org/cgi-bin/paper?S1600536810009074
http://scripts.iucr.org/cgi-bin/paper?S1600536810009074
Publikováno v:
ChemInform. 39
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bbada383efc64e8c3c79240e66f699b
https://doi.org/10.1002/chin.200840028
https://doi.org/10.1002/chin.200840028