Bulky rhodium diimine complexes for the catalyzed borylation of vinylarenes

摘要

Rhodium(I) complexes containing the bulky diimine ligand (2,6-i-Pr_2C_6H_3)DAB (DAB=1,4-diaza-1,3-butadiene) have been prepared and characterized fully.The zwitterionic complex Rh(eta~6-catBcat){(2,6-i-Pr_2C_6H_3)DAB} (3) was prepared in high yield by addition of B_2cat_3 to Rh(acac){(2,6-i-Pr_2C_6H_3)DAB} (2).These rhodium complexes have been examined for their ability to catalyze the borylation of vinylarenes.