ACTA CRYSTALLOGRAPHICA SECTION E-CRYSTALLOGRAPHIC COMMUNICATIONS, cilt.70, 2014 (ESCI)
In the title compound, C17H17N3O3S, the thiazole ring is nearly planar [maximum deviation = 0.015 (1)angstrom for the ring N atom] and the cyclopentane ring has a twist conformation. The molecular conformation is stabilized by a hypervalent interaction between the S atom and the ester group carbonyl O atom, with an S center dot center dot center dot O distance of 2.7931 (10) angstrom. In the crystal, C-H center dot center dot center dot O interactions generate chains of molecules propagating along [110] and pi-pi stacking interactions [centroidcentroid distance = 3.4677 (7) angstrom] between the thiazole rings organize these chains into (001) layers.