he scope and generality of this approach were then investigated. Various aryl or heteroaryl iodides were used in our study. Benzoxazepines or benzodiazepines were obtained in good yield (Table 3). All new products were characterized by NMR and MS spectroscopy. The protocol was found to be useful with aryl bromides also; it gave equally good result when employed in our domino strategy (Table 3, entry 11). Formation of Glaser type homocoupling products13 could be avoided as copper (I) was not used as a catalyst in this methodology. No acyclic Sonogashira products were observed in any cases.