Chemistry Letters, Vol.45, No.1, 86-88, 2016
Synthesis of Functionalized Benzobarrelenes and Azabenzobarrelenes by Rhodium-catalyzed [2+2+2] Cycloaddition
It has been established that a cationic rhodium(I)/H-8-BINAP complex catalyzes the [2+2+2] cycloaddition of cyclohexadiene-linked 1,7-diynes with monoynes to produce functionalized benzobarrelenes. Functionalized azabenzoban-elenes were also obtained by using BINAP as a ligand and nitriles as coupling partners.