3-(2,4-Dichlorophenyl)-5-methyl-1,2,4-oxadiazole
نویسندگان
چکیده
In the title compound, C(9)H(6)Cl(2)N(2)O, the dihedral angle between the oxadiazole and benzene rings is 1.7 (2)°. In the crystal, the mol-ecules are linked into chains along the b axis by short inter-molecular Cl⋯O contacts [3.019 (3) Å].
منابع مشابه
5-(2,4-Dichlorophenyl)-3-(4-nitrophenyl)-1,2,4-oxadiazole
In the title compound, C(14)H(7)Cl(2)N(3)O(3), the dichloro-phenyl and nitro-phenyl rings form dihedral angles of 5.4 (2) and 4.0 (2)°, respectively, with the oxadiazole ring. The nitro group is twisted out of the attached benzene ring by a dihedral angle of 10.4 (3)°. In the crystal, mol-ecules are linked into a chain along the a axis by C-H⋯N hydrogen bonds.
متن کامل3-(2,4-Dichlorophenyl)-5-phenyl-1,2,4-oxadiazole
In the title compound, C(14)H(8)Cl(2)N(2)O, the dihedral angles between the plane of the oxadiazole ring and those of the benzene rings are 2.3 (1) and 9.5 (1)°. In the crystal, mol-ecules are linked into chains along the c axis by C-H⋯Cl inter-actions. These chains are stacked along the a axis.
متن کامل5-Furan-2yl[1,3,4]oxadiazole-2-thiol, 5-furan-2yl-4H [1,2,4] triazole-3-thiol and their thiol-thione tautomerism.
5-Furan-2-yl[1,3,4]oxadiazole-2-thiol (Ia) and 5-furan-2-yl-4H-[1,2,4]-triazole-3-thiol (Ib) were synthesized from furan-2-carboxylic acid hydrazide. Mannich bases and methyl derivatives were then prepared. The structures of the synthesized compounds were confirmed by elemental analyses, IR and (1)H-NMR spectra. Their thiol-thione tautomeric equilibrium is described.
متن کاملSYNTHESIS OF SELENAZOL0[3,2-b] [ 1,2,4] TRIAZINE AND SELENAZOLO [2,3-C] [I ,2,4] TRIAZINE
6-Methyl- 1,2,4-triazine-3-(2H)-selenone-5(4H)-one(l) reacts in the presence of base with phenacyl bromide to give a mixture of compounds (2) and (3). This mixture is dehydrated in the presence of H,SO, to give 3-phenyl-6 methyl-7H-selenazolo[3,2-b] [I ,2,4] triazin-7-one (6). For careful structure assignment of (6) its regioisomer 3-methyl-6-phenyl-4H-selenazolo [2,3-c] [ 1,2,4] triazin-4-one...
متن کاملSYNTHESIS OF 1,2,4-TRIAZINO [3,4-C] [I ,2,4] BENZOTRIAZINE, A NOVEL HETEROCYCLIC SYSTEM
3-Mercapto-1,2,4 benzotriazine (1) was methylated by methyl iodide in the presence of base to afford 1,2-dihydro-3-methyhercapto-1, 2,4 benzotriazine (2). The latter was reacted with hydrazine hydrate to give the corresponding 3-hydrazine derivative (3). Compound (3) on condensation with phenacyl bromide gave 3- phenacyl hydrazino l,2,4-benzotriazine (4). PPA cyclization of the ketone (4) ...
متن کامل