“…[10,11] Currently, reactions of bromoallenes are attracting much interest due to their interesting chemical properties associated with the cumulated double bonds and bromine substituent. [12] However, except for our recent study on ring-forming reactions, [13,14] all the reactions of bromoallenes reported to date are intermolecular reactions. [15,16,17,18] In our previous work, [14] we found that bromoallenes A can act as allyl dication equivalents B in the presence of palladium(0) and alcohol, which are extremely useful for the synthesis of mediumAbstract: A highly regioselective synthesis of bicyclic sulfamides is described.…”