Crystal Structure of 2-[(5',6',7',8'-Tetrahydro-5',5',8',8'-tetramethyl)-2'-naphthyl]-1-ethyl-1H-benzimidazole-5-carboxylic Acid Ethyl Ester.
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چکیده
منابع مشابه
Crystal structure of 2-[(5',6',7',8'-tetrahydro-5',5',8',8'-tetramethyl)-2'-naphthyl]-1-ethyl-1H-benzimidazole-5-carboxylic acid ethyl ester.
retinoids with a tetrahydronaphthalene structure (Fig. 1), was synthesized using an NaHSO3 addition product of 5,6,7,8tetrahydro-5,5,8,8-tetramethyl-2-naphthalene-carboxaldehyde (compound I) as a starting material, which was prepared as described.1 The condensation of compound I and 4-ethylamino3-amino-ethylbenzoate (mp: 73 ̊C) in DMF for 70 h gave the title compound (recrystallized from hexane/...
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In the title compound, C(15)H(20)N(2)O(3), the benzimidazole ring is essentially planar, with a maximum deviation from the mean plane of 0.012 (1) Å. The crystal structure is stabilized by inter-molecular O-H⋯N hydrogen bonds, forming centrosymmetric dimers, which are connected in the [100] direction through weak C-H⋯O contacts.
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There are two mol-ecules in the asymmetric unit of the title compound, C(18)H(18)N(2)O(3). In each one, the benzimidazole ring system is essentially planar, with maximum deviations of 0.027 (1) and 0.032 (1)Å, and makes dihedral angles of 38.64 (6) and 41.48 (6)°, respectively, with the attached benzene rings. An intra-molecular C-H⋯O hydrogen bond is observed in each mol-ecule. The two indepen...
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biological activities,1 and some of them are used as drugs.2,3 In previous studies,4,5 we reported on the synthesis and biological evaluation of 1,2,5(6)-trisubstituted benzimidazoles as antihistaminic and antimicrobial agents. The synthesis of ethyl 1-cyclopropyl-5-fluoro-6-(4-methylpiperazine-1-yl)-1H-benzimidazole-2-acetate (1) was performed according to reported methods.6,7 1-Cyclopropyl-2-...
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In the title compound, C(22)H(17)BrN(2)O(2), the benzimidazole ring system is essentially planar, with a maximum deviation of 0.017 (1) Å, and forms dihedral angles of 27.79 (6) and 64.43 (6)° with the phenyl and bromo-substituted benzene rings, respectively. In the crystal, mol-ecules are linked into one-dimensional chains along the a axis by weak C-H⋯O hydrogen bonds. Weak inter-molecular C-H...
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ژورنال
عنوان ژورنال: Analytical Sciences
سال: 2001
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.17.567