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International Union of Crystallography, Acta Crystallographica Section E: Structure Reports Online, 11(64), p. o2157-o2157, 2008

DOI: 10.1107/s1600536808033862

International Union of Crystallography, Acta Crystallographica Section E: Structure Reports Online, 11(63), p. o4344-o4344, 2007

DOI: 10.1107/s1600536807050015

International Union of Crystallography, Acta Crystallographica Section E: Structure Reports Online, 11(64), p. o2156-o2156, 2008

DOI: 10.1107/s1600536808033850

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2,2,10-Trimethyl-2,3-dihydro­pyrano[2,3-a]carbazol-4(11H)-one

Journal article published in 2008 by Makuteswaran Sridharan, Karnam J. Rajendra Prasad, Aimable Ngendahimana, Matthias Zeller ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The title compound, C(18)H(17)NO(2), was prepared from 1-hydr-oxy-7-methyl-carbazole and 3,3-dimethyl-acrylic acid with trifluoro-acetic acid as the cyclization catalyst. The mol-ecules contain an essentially planar 6-methyl-indole unit. The second aromatic ring is significantly bent away from the plane of this unit, with maximum deviations of 0.171 (1) and 0.185 (1) Å for two of the C atoms. In the crystal structure, there are neither N-H⋯O hydrogen bonds nor π-π stacking between the aromatic sections of neighboring mol-ecules. There is only one weak C-H⋯O hydrogen bond and a number of weak C-H⋯π inter-actions.