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1-[(4-tert-Butyl-phen-yl)sulfon-yl]-1H-benzimidazole.

ABSTRACT: The title compound, C(17)H(18)N(2)O(2)S, was synthesized by aryl-sulfonyl-ation of 1-hy-droxy-methyl-1H-benzimidazole in the presence of triethyl-amine. The benzimidazole and benzene rings form a dihedral angle of 84.1 (1)°. The tert-butyl group was treated as rotationally disordered over two orientations in a 0.51 (2):0.49 (2) ratio. In the crystal, weak inter-molecular C-H⋯O hydrogen bonds link the mol-ecules into chains propagating in [010].

SUBMITTER: Abdireymov KB

PROVIDER: S-EPMC3051969 | biostudies-literature |

REPOSITORIES: biostudies-literature

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1-(4-tert-Butyl-benz-yl)-2-(4-tert-butyl-phen-yl)-1H-benzimidazole.

Project description:In the mol-ecule of the title compound, C(28)H(32)N(2), the benzimidazole ring system is almost planar [maximum deviation = 0.0221 (15) Å] and forms dihedral angles of 85.86 (4) and 32.09 (6)° with the benzene rings. In the crystal structure, mol-ecules are linked into chains running parallel to the a axis by inter-molecular C-H⋯N hydrogen bonds. The methyl groups of a tert-butyl group are rotationally disordered over two positions with refined site-occupancy factors of 0.636 (4) and 0.364 (4).

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Project description:The title compound, 0.759C(19)H(21)ClN(2)O(2)S·0.241C(19)H(21)ClN(2)O(2)S, was synthesized by aryl-sulfonyl-ation of 2-n-butyl-5-chloro-1H-benzimidazole in the presence of triethyl-amine. The crystal structure is composed of two mol-ecules, 2-n-butyl-6-chloro-1-(2,4-dimethylphenyl-sulfon-yl)-1H-benzimidazole and 1-(2,4-dimethylphenyl-sulfon-yl)-2-n-butyl-5-chloro-1H-benz-imidazole, in the refined ratio of 0.759 (4):0.241 (4) disordered at the same position in the unit cell. The mol-ecule has three essentially planar fragments viz. benzimidazole, dimethyl-benzene and n-butyl (r.m.s. deviations of 0.009, 0.024 and 0.003 Å, respectively). The angle between the benzimidazole and dimethyl-benzene fragments is 86.0 (1)°. In the crystal, pairs of inter-molecular C-H⋯π inter-actions form centrosymmetrical dimers, which are linked by weak inter-molecular C-H⋯O hydrogen bonds.

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tert-Butyl 2-{[5-(4-cyano-phen-yl)pyridin-3-yl]sulfon-yl}acetate.

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Ethyl 1-tert-butyl-2-(4-hydr-oxy-3-methoxy-phen-yl)-1H-benzimidazole-5-carboxyl-ate.

Project description:In the title compound, C(21)H(24)N(2)O(4), the benzimidazole ring system is almost planar, with a maximum deviation of 0.047?(1)?Å and makes a dihedral angle of 88.44?(5)° with the attached benzene ring. In the crystal, mol-ecules form infinite chains along the b axis by way of inter-molecular O-H?N and C-H?O inter-actions. Weak C-H?? also contribute to the stabilization of the crystal structure.

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3-tert-Butyl-1-(3-nitro-phen-yl)-1H-pyrazol-5-amine.

Project description:In the title compound, C(13)H(16)N(4)O(2), the pyrazole ring forms a dihedral angle of 50.61?(6)° with the 3-nitro-phenyl ring. The plane of the nitro group is twisted by 6.8?(7)° out of the plane of the phenyl ring. In the crystal, the mol-ecules are linked by N-H?N and N-H?O hydrogen bonds, forming sheets in the bc plane. In addition, a weak C-H?N inter-action is observed.

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Ethyl 1-sec-butyl-2-(4-fluoro-phen-yl)-1H-benzimidazole-5-carboxyl-ate.

Project description:In the title compound, C(20)H(21)FN(2)O(2), the benzene ring and the benzimidazole ring system are inclined at a dihedral angle of 44.40?(9)°. In the crystal, mol-ecules are linked by inter-molecular C-H?O hydrogen bonds, forming a zigzag chain along the b-axis direction. An intra-molecular C-H?? inter-action is also observed.

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Ethyl 1-sec-butyl-2-(4-chloro-phen-yl)-1H-benzimidazole-5-carboxyl-ate.

Project description:In the title compound, C(20)H(21)ClN(2)O(2), the ethyl 1H-benzimidazole-5-carboxyl-ate ring system, excluding the methyl-ene and methyl H atoms, is almost planar, with a maximum deviation of 0.055 (1) Å, and makes a dihedral angle of 40.63 (4)° with the benzene ring. The sec-butyl group is disordered over two positions, with refined site occupancies of 0.855 (4) and 0.145 (4). In the crystal, mol-ecules are linked into chains along [010] via inter-molecular C-H⋯O hydrogen bonds and are further inter-connected by C-H⋯Cl inter-actions into two-dimensional networks parallel to (001). The crystal structure is further consolidated by C-H⋯π inter-actions.

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Project description:In the title compound, C(15)H(11)N(5), the benzimidazole ring system is nearly planar [maximum deviation = 0.039?(2)?Å], and is oriented at a dihedral angle of 28.85?(10)° with respect to the benzene ring; the dihedral angle between the triazole and benzene rings is 17.30?(15)°. In the crystal N-H?N hydrogen bonds link the mol-ecules into chains. Weak C-H?N inter-actions are also present.

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2-(3,4,5-Trimethoxy-phen-yl)-1H-benzimidazole.

Project description:In the title compound, C(16)H(16)N(2)O(3), the dihedral angle between the mean planes of the aromatic ring systems is 30.90?(15)°. In the crystal structure, the mol-ecules form [010] chains by way of N-H?N hydrogen bonds.

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