Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Latifa H. Youssef"'
Publikováno v:
Scopus-Elsevier
Arom. amides 4 (3-aroyl-2,2,4,4-tetramethyloxazolidines or TMO amides) derived by acylation of 2,2,4,4-tetramethyloxazolidine undergo ortho- and lateral lithiation reactions. Given sufficient steric hindrance to bond rotation, they exhibit atropisome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d2b0608321cb718f33902b0fcc103f3
https://doi.org/10.1055/s-2002-19748
https://doi.org/10.1055/s-2002-19748
Publikováno v:
Organic Letters. 3:4133-4136
The double ortholithiation and electrophilic quench of N,N,N'N'-tetraisopropylbiphenyl-2,2'-dicarboxamide 1 is diastereoselective, giving the chiral, C(2)-symmetric atropisomers of the 3,3'-disubstituted products 3. These chiral atropisomers can be c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d127bba31742058944fa990d174327b3
https://doi.org/10.1021/ol0167457
https://doi.org/10.1021/ol0167457
Publikováno v:
Tetrahedron Letters. 41:5171-5175
Tertiary 9,9-dimethylxanthene-4,5-dicarboxamides have a C 2 -symmetric, axially chiral ground state due to remote interactions between the conformationally constrained tertiary amide substituents. Double ortholithiation–alkylation blocks amide rota
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::058b0d4a3027dd8eecda6ad60cd02885
https://doi.org/10.1016/s0040-4039(00)00833-9
https://doi.org/10.1016/s0040-4039(00)00833-9
Autor:
Giles Robert Gordon, Lewis Norman John, Latifa H. Youssef, Michael Urquhart, Sasse Michael John, Quick John Kirby
Publikováno v:
Tetrahedron. 56:4531-4537
The novel regiospecific and general reduction of 5-benzylidene-2,4-thiazolidinediones and 5-benzylidene-4-oxo-2-thiazolidinethiones to the corresponding 5-benzyl derivatives has been accomplished using lithium borohydride in pyridine and tetrahydrofu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4933deac3ecd55f152c8c93829fa4c10
https://doi.org/10.1016/s0040-4020(00)00361-6
https://doi.org/10.1016/s0040-4020(00)00361-6
Publikováno v:
ChemInform. 33
Arom. amides 4 (3-aroyl-2,2,4,4-tetramethyloxazolidines or TMO amides) derived by acylation of 2,2,4,4-tetramethyloxazolidine undergo ortho- and lateral lithiation reactions. Given sufficient steric hindrance to bond rotation, they exhibit atropisome
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d4a21afe5c74d0c862387c024762b36
https://doi.org/10.1002/chin.200225118
https://doi.org/10.1002/chin.200225118
Publikováno v:
ChemInform. 33
Ortholithiation and reaction with (−)-menthyl p-toluenesulfinate introduces a sulfoxide substituent ortho to the stereogenic Ar−CO axis of an aromatic amide. The sulfoxide exerts a powerful conformational bias on the axis, such that after rapid e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36434748b2c40712eefe9e1f5d5e45a4
https://doi.org/10.1002/chin.200238028
https://doi.org/10.1002/chin.200238028
Autor:
Neoclis Vassiliou, Neil Westlund, Mark S. Betson, Samreen A. Yasin, Paul V. Johnson, Christopher C. Stimson, Jennifer H. Pink, Lai Wah Lai, Madeleine Helliwell, Latifa H. Youssef, Jonathan Clayden
Publikováno v:
Organic and biomolecular chemistry. 4(3)
Tertiary aromatic amides bearing stereogenic centres ortho to the amide group may adopt two diastereoisomeric conformations which interconvert slowly on the NMR timescale at ambient temperature, and are therefore detectable by NMR. Certain classes of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f076ffd2b87bdf61202fc1d74a72f2a3
http://ora.ox.ac.uk/objects/uuid:0c1b68a7-d6fd-43e4-82da-47012578f305
http://ora.ox.ac.uk/objects/uuid:0c1b68a7-d6fd-43e4-82da-47012578f305
Autor:
Latifa H. Youssef, Lewis Norman John, Giles Robert Gordon, Quick John Kirby, Michael Urquhart, Sasse Michael John
Publikováno v:
ChemInform. 31
The novel regiospecific and general reduction of 5-benzylidene-2,4-thiazolidinediones and 5-benzylidene-4-oxo-2-thiazolidinethiones to the corresponding 5-benzyl derivatives has been accomplished using lithium borohydride in pyridine and tetrahydrofu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28a5625ff507d4f766d6e5dc9928b4b8
https://doi.org/10.1002/chin.200041105
https://doi.org/10.1002/chin.200041105
Publikováno v:
Journal of the American Chemical Society. 124:5266-5267
Ortholithiation and reaction with (-)-menthyl p-toluenesulfinate introduces a sulfoxide substituent ortho to the stereogenic Ar-CO axis of an aromatic amide. The sulfoxide exerts a powerful conformational bias on the axis, such that after rapid equil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::161b0871702902dbb419eb9adb162ff0
https://doi.org/10.1021/ja017702o
https://doi.org/10.1021/ja017702o