Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Nasser R. El-Brollosy"'
Autor:
Mohamed I. Attia, Ali A. El-Emam, Abdulghafoor A. Al-Turkistani, Amany L. Kansoh, Nasser R. El-Brollosy
Publikováno v:
Molecules, Vol 19, Iss 1, Pp 279-290 (2013)
5-Alkyl-6-(substituted benzyl)-2-thiouracils 3a,c were reacted with (2-chloroethyl) diethylamine hydrochloride to afford the corresponding 2-(2-diethylamino)ethylthiopyrimidin- 4(3H)-ones 4a,b. Reaction of 3a–c with N-(2-chloroethyl)pyrrolidine hyd
Externí odkaz:
https://doaj.org/article/e8986a0eefbb4f5d9c4a37aeda5d7919
Publikováno v:
Molecules, Vol 16, Iss 6, Pp 4764-4774 (2011)
6-Chloro-5-ethyl-, n-propyl- and isopropyluracils 5a-c were efficiently prepared from the corresponding 5-alkybarbituric acids 3a-c via treatment with phosphorus oxychloride and N,N-dimethylaniline to yield the corresponding 5-alkyl-2,4,6-trichloro-p
Externí odkaz:
https://doaj.org/article/60dc6b8641874d5e893dc22f1c950c99
Autor:
Mohamed I. Attia, Nasser R. El-Brollosy, Amany L. Kansoh, Hazem A. Ghabbour, Reem I. Al-Wabli, Hoong-Kun Fun
Publikováno v:
Journal of Chemistry, Vol 2014 (2014)
Externí odkaz:
https://doaj.org/article/88709226ae574dc89d888b62f7e03de4
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 7, Pp o2059-o2060 (2012)
Three independent molecules comprise the asymmetric unit of the title compound, C23H20ClF3N4S. The conformations of the molecules are similar with the chlorobenzene and CF3-benzene rings almost perpendicular to, and almost co-planar with, the pyrimid
Externí odkaz:
https://doaj.org/article/81672d0e5c1a438e968365103a70ee2f
Autor:
Ali A. El-Emam, Ebtehal S. Al-Abdullah, Nasser R. El-Brollosy, Seik Weng Ng, Edward R. T. Tiekink
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 7, Pp o2031-o2031 (2012)
The imine residue [C=N = 1.268 (3) Å; conformation = E] is twisted [N—N—C—N = 87.8 (2)°] out of the plane (r.m.s. deviation = 0.016 Å) of the central 1,2,4-triazole ring in the title compound, C30H34F2N6S. A small twist also occurs between t
Externí odkaz:
https://doaj.org/article/e1570ed0d4ec42feba5d5312a966866a
Autor:
Ali A. El-Emam, Nasser R. El-Brollosy, Mohamed I. Attia, Mohammed Said-Abdelbaky, Santiago García-Granda
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 7, Pp o2172-o2173 (2012)
The molecule of the title compound, C24H32N4OS, is a functionalized 1,3,4-oxadiazole-2-thione with substituted piperazine and adamantanyl substituents attached at the 3- and 5-positions, respectively, of the oxadiazole spacer with an approximately C-
Externí odkaz:
https://doaj.org/article/efc484a0f40e4cf8ad1a46e736655886
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 7, Pp o2054-o2054 (2012)
In the title compound, C24H25N3S2, the S-bound benzene rings have orthogonal [dihedral angle = 85.31 (9)°] and splayed [67.92 (11)°] orientations with respect to the pyrimidine ring; the dihedral angle between the benzene rings is 48.18 (12)°. The
Externí odkaz:
https://doaj.org/article/b18e79f4d56c49c7b222f2467a15336b
Autor:
Maha S. Almutairi, Ali A. El-Emam, Nasser R. El-Brollosy, Mohammed Said-Abdelbaky, Santiago García-Granda
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 7, Pp o2247-o2248 (2012)
The title molecule, C17H20N2O, is a functionalized hydrazine with benzoyl and adamantyl substituents attached to the two hydrazine N atoms. In the crystal, molecules are linked via N—H...N hydrogen bonds, forming chains propagating along the a-axis
Externí odkaz:
https://doaj.org/article/b7ad0b0f719949a5b6516c3ead9a6512
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 6, Pp o1776-o1777 (2012)
In the title 1,2,4-triazine derivative, C17H19N3O3, the heterocyclic ring is planar (r.m.s. deviation = 0.040 Å) and effectively coplanar with the adjacent phenyl ring [dihedral angle = 4.5 (2)°] but almost perpendicular to the (cyclohex-3-en-1-ylm
Externí odkaz:
https://doaj.org/article/a3795674672e48c889bb52f823e3a581
Autor:
Mohamed I. Attia, Mohamed N. Aboul-Enein, Nasser R. El-Brollosy, Seik Weng Ng, Edward R. T. Tiekink
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 6, Pp o1848-o1849 (2012)
In the title compound, C20H21N5O, the conformation about the imine bond [1.289 (3) Å] is E. Overall, the molecule is disk-shaped with the imidazole ring located above the remainder of the molecule and with the dihedral angles of 10.97 (15) and 12.11
Externí odkaz:
https://doaj.org/article/bff2d534485848b8a946c71a69abc58f