Description General description 1-Bromobenzocyclobutene is a useful synthon. It has important applications in organometallic methodology. Reaction between cycloheptatriene, bromoform, potassium carbonate and 18-crown-6 at 140°C yields 1-bromobenzocyclobutene. Application 1-Bromobenzocyclobutene may be used in the synthesis of following compounds: • five-membered zirconacycles • benzocyclobutenol and benzocyclobutenone • 2,3-dimethoxyprotoberberinium bromide, via reaction with 3,4-dihydro-6,7-dimethoxyisoquinoline Packaging 1 g in glass bottle