Crystal structure of ethyl 2-(2,4,5-tri-meth-oxy-phen-yl)quinoline-4-carboxyl-ate.
In the title compound, C21H21NO5, the dihedral angle between the quinoline ring system (r.m.s. deviation = 0.028 Å) and the tri-meth-oxy-benzene ring is 43.38 (5)°. The C atoms of the meth-oxy groups deviate from their attached benzene ring by -0.396 (2), -0.049 (2) and 0.192 (2) Å for the ortho-, meta- and para-substituents, respectively. The pendant ethyl chain is disordered over two orientations in a 0.527 (5):0.473 (5) ratio. A short intra-molecular C-H⋯O contact closes an S(6) ring. In the crystal, inversion dimers linked by pairs of weak C-H⋯O inter-actions generate R 2 (2)(6) loops. The dimers are linked by further C-H⋯O inter-actions to generate [1-10] chains.
Department of Chemistry, Kuvempu University, Jnanasahyadri, Shankaraghatta 577 451, India.
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Shrungesh Kumar
Institution of Excellence, University of Mysore, Manasagangotri, Mysore 570 006, India.
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Naveen
Department of Chemistry, Yuvaraja's College, University of Mysore, Mysore 570 005, India.
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Kumara
Department of Chemistry, Kuvempu University, Jnanasahyadri, Shankaraghatta 577 451, India.
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Mahadevan
Department of Studies in Physics, University of Mysore, Manasagangotri, Mysore 570 006, India.
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Lokanath
C—H⋯O inter­actions; crystal structure; hydrogen bonding; quinoline; quinolone-4-ethyl carboxyl­ate