Received 21 April 2012
In the title compound, C17H19NO2S2, the 2H-chromene ring system is almost planar, with a maximum deviation of 0.044 (2) Å, and the pyrrolidine ring adopts an envelope conformation. The dihedral angle between the 2H-chromene system and the planar part of the pyrrolidine ring is 83.65 (8)°. A weak intramolecular C-HS hydrogen bond occurs. The crystal structure features C-HO hydrogen bonds and - interactions, with a centroid-centroid distance of 3.5728 (16) Å.
For biological properties of coumarins, see: Adavi et al. (2004); Laurin et al. (1999); Kulkarni et al. (2006). For related structures, see: Kumar et al. (2012); Kant et al. (2012). For synthetic details, see: Shastri et al. (2004); Vasilliev & Polackov (2000).
Data collection: SMART (Bruker, 2001); cell refinement: SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WN2472 ).
The authors acknowledge the Universities Sophisticated Instrumental Centre, Karnatak University, Dharwad, for CCD X-ray facilities, single-crystal X-ray diffractometer, GCMS, IR, CHNS and NMR data. NMM is grateful to Karnatak Science College, Dharwad, for providing laboratory facilities. He is also thankful to P C Jabin Science College, Hubli and UGC for allowing him to do research under FIP.
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