Synthesis of 7-Halo-6H-benz[cd]azulen-6-ones
نویسندگان
چکیده
منابع مشابه
Synthesis of 2-substituted 9-oxa-guanines {5-aminooxazolo[5,4-d]pyrimidin-7(6H)-ones} and 9-oxa-2-thio-xanthines {5-mercaptooxazolo[5,4-d]pyrimidin-7(6H)-ones}
Oxazolo[5,4-d]pyrimidines can be considered as 9-oxa-purine analogs of naturally occurring nucleic acid bases. Interest in this ring system has increased due to recent reports of biologically active derivatives. In particular, 5-aminooxazolo[5,4-d]pyrimidine-7(6H)-ones (9-oxa-guanines) have been shown to inhibit ricin. The preparation of a series of 2-substituted 5-aminooxazolo[5,4-d]pyrimidin-...
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In the title compound, C(21)H(21)N(5)O(2), the triazolopyrimidine ring system is essentially planar [maximum displacement = 0.021 (4) Å] and forms dihedral angles of 41.17 (9) and 67.99 (8)° with the phenyl and benzene rings, respectively. The n-butyl side chains is disordered over two positions with an ccupancy ratio of 0.77:0.23. An intra-molecular C-H⋯O hydrogen-bonding inter-action stabiliz...
متن کامل3-Benzyl-6-isopropyl-5-phenoxy-3H-1,2,3-triazolo[4,5-d]pyrimidin-7(6H)-one
In the title compound, C(20)H(19)N(5)O(2), all atoms of the 1,2,3-triazolo[4,5-d]pyrimidine ring system are essentially coplanar [maximum deviation = 0.015 (2) Å], indicating the existence of a conjugate system in which each carbon and nitrogen atom is sp(2) hybridized and ten π electrons (three from carbon atoms and seven from nitrogen atoms) constitute an aromatic heterocycle. The ring system...
متن کامل3-(1,3-Diphenylpropan-2-yl)-4-methyl-6-phenylisoxazolo[3,4-d]pyridazin-7(6H)-one
In the title compound, C27H23N3O2, the geminal benzyl groups branching out from the methine adjacent to the isoxazole group are both syn-oriented to the methyl group of the pyridazinone moiety, as reflected by C-C distances of 3.812 (2) and 4.369 (2) Å between the methyl carbon and the nearest ring carbon of each benzyl group. This kind of conformation is retained in CDCl3 solution, as evidence...
متن کامل6-Isopropyl-5-methoxy-3-phenyl-3H-1,2,3-triazolo[4,5-d]pyrimidin-7(6H)-one
In the title compound, C(14)H(15)N(5)O(2), the whole mol-ecule apart from the terminal C atoms of the isopropyl group is located on a crystallographic mirror plane. An intra-molecular C-H⋯N hydrogen-bonding inter-action may stabilize the mol-ecular conformation. The crystal packing features weak slipped π-π inter-actions between the pyrimidine and the phenyl rings of symmetry-related mol-ecules...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1981
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.54.1893