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(E)-N-(2,3,4-Trimeth-oxy-6-methyl-benzyl-idene)naphthalen-1-amine.

ABSTRACT: In the title compound, C(21)H(21)NO(3), the dihedral angle between the naphthalene ring system and the substituted benzene ring is 55.7 (2)°. The mol-ecules are linked into a zigzag chain running along the b axis by C-H⋯O hydrogen bonds.

SUBMITTER: Wang CY

PROVIDER: S-EPMC2967970 | biostudies-literature |

REPOSITORIES: biostudies-literature

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(E)-N-(2,3,4-Trimeth-oxy-6-methyl-benzyl-idene)aniline.

Project description:In the title compound, C(17)H(19)NO(3), the C-C=N-C torsion angle between the benzene and phenyl rings is -177.3?(2)°, and the dihedral angle between the rings is 54.6?(2)°. The crystal structure is stabilized by intra-molecular hydrogen bonds and weak ?-? and C-H?? inter-actions.

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(E)-4-Methyl-N-(2,3,4-trimeth-oxy-6-methyl-benzyl-idene)aniline.

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Project description:In the title compound, C15H23N3O3, the piperazine ring is in a slightly distorted chair conformation and is twisted from the mean plane of the benzene ring making a dihedral angle of 14.94 (6)°. The 4-meth-oxy substituent is almost co-planar with the benzene ring [C-C-O-C torsion angle = 5.4 (1)°], while the meth-oxy groups at positions 2 and 3 [C-C-O-C torsion angles of 122.6 (4) and -66.1 (4)°, respectively] are twisted away from the mean plane of the benzene ring in anti-clinical and synclinical conformations, respectively. No classical hydrogen bonds or any weak inter-molecular inter-actions are observed in the crystal structure.

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3,4-Dimethyl-N-(2,4,5-trimeth-oxy-benzyl-idene)-1,2-isoxazol-5-amine.

Project description:In the title compound, C(15)H(18)N(2)O(4), the aromatic rings on the azomethine double bond are trans to each other [C-C=N-C torsion angle = -178.29?(12)°] and they are approximately coplanar, the dihedral angle between them being 5.0?(1)°.

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Project description:The title compound, C(16)H(18)O(7), was prepared by the reaction of 2,2-dimethyl-1,3-dioxane-4,6-dione and 2,3,4-trimeth-oxy-benzaldehyde. The 1,3-dioxane ring is in a slightly distorted boat conformation. The crystal structure is stabilized by weak inter-molecular C-H?O hydrogen bonds.

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