Zobrazeno 1 - 10
of 103
pro vyhledávání: '"You-Quan Zhu"'
Publikováno v:
ARKIVOC, Vol 2008, Iss 12, Pp 30-41 (2008)
Externí odkaz:
https://doaj.org/article/85194c7887e24c4fbf35b97029972aef
Autor:
Hua-Zheng Yang, Yong-Hong Li, Bin Liu, Fang-Zhong Hu, Xiao-Mao Zou, Chang-Sheng Yao, You-Quan Zhu
Publikováno v:
Molecules, Vol 10, Iss 2, Pp 427-434 (2005)
In the search for better herbicides a series of 1-alkyl-3-(α-hydroxy-(un)substituted benzylidene)pyrrolidine-2,4-diones were prepared and their structure-activity relationships studied. All their structures have been confirmed by 1H-NMR andele
Externí odkaz:
https://doaj.org/article/9bbf3690787e4187a488c6560c04839c
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 12, Pp o3202-o3202 (2010)
In the title compound, C16H19NO4, a potent new herbicide, the dihedral angle between the benzene and pyrrolidine rings is 11.09 (8)°. Intramolecular O—H...O and C—H...O hydrogen bonds are observed.
Externí odkaz:
https://doaj.org/article/f94eed2b338b4a81aa14cd1fdffa9e43
Autor:
Hai-zhen Xu, You-Quan Zhu
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 9, Pp o2248-o2248 (2010)
In the title compound, C18H20N2O3, the dihedral angle between the indole ring system (r.m.s. deviation = 0.018 Å) and the hydroxymethylenepyrrolidine-2,4-dione plane (r.m.s. deviation = 0.036 Å) is 9.87 (7)°. The keto and enol groups are involved
Externí odkaz:
https://doaj.org/article/ababbf0b53024911a47dc64c3d3f6dd4
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 6, Pp o1309-o1309 (2010)
The title compound, C20H19N3O, exists in a keto–enamine tautomeric form. The pyrazolone ring makes dihedral angles of 20.52 (10) and 77.73 (5)° with the two phenyl rings and an intramolecular N—H...O hydrogen bond occurs. A weak intermolecular C
Externí odkaz:
https://doaj.org/article/fd249cc724b74bbda180a1c29793cfb5
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 5, Pp o1123-o1123 (2010)
In the title compound, C20H19N3O, the dihedral angles formed by the pyrazolone ring with the two phenyl rings are 64.27 (6) and 17.00 (6)°. The molecular structure is stabilized by intramolecular N—H...O and C—H...O hydrogen bonds. In the crysta
Externí odkaz:
https://doaj.org/article/bb3c38d2d60a48cc88e3466c49ba727f
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 11, Pp o2740-o2740 (2009)
In the title compound, C25H23N3O2, the dihedral angles formed by the pyrazolone ring with the three aromatic rings are 14.59 (7), 79.35 (5) and 87.10 (6)°. Three intramolecular C—H...O, C—H...N and N—H...O hydrogen-bond interactions are presen
Externí odkaz:
https://doaj.org/article/ffa2344486df43efb42b1d218c84dd6d
Publikováno v:
Acta Crystallographica Section E, Vol 65, Iss 9, Pp o2116-o2116 (2009)
In the title compound, C21H23N3O, the dihedral angles formed by the pyrazolone ring with two phenyl rings are 10.38 (8) and 76.94 (6)°. The sec-butylamino group is disordered over two positions, with refined site-occupancy factors of 0.730 (4) and 0
Externí odkaz:
https://doaj.org/article/2cf20c583fdf4fc795618c1b2c44a155
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 4, Pp o675-o675 (2008)
In the title molecule, C19H15F3N2O, the benzene rings of the tolyl and trifluoromethylphenyl groups form dihedral angles of 64.1 (2) and 38.5 (2)°, respectively, with the pyridazine ring. The CF3 group is disordered over two orientations, with site-
Externí odkaz:
https://doaj.org/article/2bfe6722f4594789a16eb9ab011bc040
Publikováno v:
Acta Crystallographica Section E, Vol 64, Iss 2, Pp o464-o464 (2008)
The title compound, C15H13F3N2O, contains one benzene ring, one cyclohexane ring and a pyridazine ring. The dihedral angle formed by the pyridazine ring with the benzene ring is 61.5 (2)°. The crystal structure is stabilized by two intermolecular hy
Externí odkaz:
https://doaj.org/article/5877b4d679d449bd89667ae80764b78a