Experimental

R factor = 0.037; wR factor = 0.077; data-to-parameter ratio = 18.8. The six-membered cyclohexene ring in the title compound, C22H22BrNOS2, adopts an envelope conformation, with the C atom bearing the two methyl groups representing the flap. This atom deviates by 0.686 (4) A ̊ from the plane passing through the other five atoms of the ring (r.m.s. deviation = 0.025 Å). The molecular conformation is stabilized by an intramolecular N—H S hydrogen bond. Related literature For previous work on this topic, see: El Ashry et al. (2005a,b, 2006, 2008a,b); El Ashry, Kassem et al. (2009). For the use of enamines in heterocyclic synthesis, see: Tominaga (1989); Tominaga et al. (1991). For another triclinic polymorph of the title compound, see El Ashry, Amer et al. (2009)