3-(2-Bromophenyl)thiazolo[3,2-a]benzimidazole
نویسندگان
چکیده
The title compound, C(15)H(9)BrN(2)S, was prepared by the reaction of 1-bromo-2-(2,2-dibromo-vin-yl)benzene with 1H-benzo[d]imidazole-2(3H)-thione. The thia-zolo[3,2-a]benz-imidazole fused-ring system is nearly planar, the maximum atomic deviation being 0.049 (4) Å. This mean plane is oriented at a dihedral angle of 71.55 (17)° with respect ot the bromo-phenyl ring. π-π stacking is observed in the crystal structure, the centroid-centroid distance between the thia-zole and imidazole rings of adjacent mol-ecules being 3.582 (2) Å.
منابع مشابه
(Z)-2-(4-Chlorobenzylidene)benzo[d]thiazolo[3,2-a]imidazol-3(2H)-one
The mol-ecule of the title compound, C(16)H(9)ClN(2)OS, is approximately planar, the dihedral angle between the thia-zolo[3,2-a]benzimidazole ring system and the 4-chloro-phenyl ring being 2.10 (5)°. An intra-molecular C-H⋯S inter-action generates an S(6) ring motif. In the crystal, mol-ecules are stacked into columns along the b axis by π-π inter-actions with centroid-centroid distances of 3.6...
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The mol-ecule of the title compound, C(16)H(10)N(2)OS, is approximately planar, the dihedral angle between the 1,3-benzothia-zolo[3,2-a]imidazol-3(2H)-one and the benzyl-idene moieties being 4.10 (8)°. A weak intra-molecular C-H⋯S inter-action generates an S(6) ring. No inter-molecular hydrogen bonds are observed in the crystal structure.
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In the title compound, C(30)H(30)N(4)O(7)S, the two spiro junctions link a planar 2-oxindole ring [with a mean deviation from the plane of 0.0319 (3) Å, a pyrrolidine ring in an envelope conformation and a thia-zolo[3,2-a]pyrimidine system. Two mol-ecules are connected into a dimer by two N-H⋯O hydrogen bonds, forming an R(2) (2)(8) graph-set motif. The title compound has four stereogenic cente...
متن کاملNew route to 3-alkylthiazolo[3,2-a]benzimidazole derivatives.
3-Alkyl-thiazolo[3,2-a]benzimidazole derivatives are obtained in high yields via the corresponding 4-alkyl-N-3-(2-aminophenyl)-thiazoline-2-thiones which are easily prepared from 1,2-diaminobenzene, CS(2) and halogenoketones. This new route compares advantageously with the classical mercaptobenzimidazole routes in term of simplicity,isolated yields and availability of the starting materials.
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In the title compound, C(23)H(19)ClN(2)O(3)S, the central pyrimidine ring is significantly puckered, assuming almost a screw boat conformation. In addition to the usual inter-molecular C-H⋯O hydrogen bonding, short intra-molecular C-H⋯S contacts and π-π stacking inter-actions [centroid-centroid distance = 3.762 (2) Å] contribute to the crystal packing.
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