Propenethioamides in the synthesis of heterocyclic systems. Synthesis of pyrrole and 1,4-thiazepine derivatives

The reaction of propenethioamides 1 with bromoketones 2 and 3 led in acidic medium to the formation of 1,4-thiazepines 6 and 7 . The pyrrole derivatives 4 and 5 were obtained by reaction of 1 with 2 and 3 in basic medium.