Synthesis of Novel Benzocyclobutene Compounds

Abstract Novel benzocyclobutene derivatives, 3-mercaptobicyclo[4.2.0]octa-1,3,5-triene (2), and 3-chlorosulfonylbicyclo[4.2.0]octa-1,3,5-triene (3), have been synthesized in good yields from easily accessible bromobenzocyclobutene 5.