Catalyst Design of Vaska-Type Iridium Complexes for Highly Efficient Synthesis of π-Conjugated Enamines
作者:Atsushi Tahara、Yasumitsu Miyamoto、Ryuta Aoto、Keisuke Shigeta、Yuta Une、Yusuke Sunada、Yukihiro Motoyama、Hideo Nagashima
DOI:10.1021/acs.organomet.5b00636
日期:2015.10.26
The appropriate design of a ligand (L) in IrCl(CO)(L)(2) (4) realized the efficient synthesis of pi-conjugated enamines possessing hole-transport properties. The iridium complex with electron-withdrawing phosphorus ligands catalyzed the hydrosilylation of amides to the corresponding silylhemiaminals, which were transformed to the enamines by heat or by treatment with acids. High catalytic efficiency (TON > 10,000) was achieved, which made it possible for the residual iridium in the enamine product to be below 20 ppb.