Research Article: 8-Formyl-4-methyl-2-oxo-2H-chromen-7-yl 4-methyl­benzenesulfonate

Date Published: June 01, 2011

Publisher: International Union of Crystallography

Author(s): H. Yuvaraj, D. Gayathri, Rajesh G. Kalkhambkar, Geeta M. Kulkarni, Rajendra M. Bapset.


In the title compound, C18H14O6S, the coumarin ring system is nearly planar, with a maximum out-of-plane deviation of 0.032 (2) Å. The dihedral angle between the benzene ring and the coumarin ring system is 32.41 (8)°. The crystal packing is stabilized by inter­molecular C—H⋯O inter­actions, generating C(8), C(10) and C(11) chains and an R22(10) ring. The formyl group is disordered over two sets of sites, with occupancies of 0.548 (5) and 0.452 (5).

Partial Text

For the biological activity of coumarins, see: Carlton et al. (1996 ▶); El-Agrody et al. (2001 ▶); Emmanuel-Giota et al. (2001 ▶); Kulkarni et al. (2006 ▶); Kalkhambkar et al. (2008 ▶); Shaker (1996 ▶); Yang et al. (2005 ▶); Zhou et al. (2000 ▶). For a related structure, see: Yuvaraj et al. (2011 ▶).




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