Catalyst Design of Vaska-Type Iridium Complexes for Highly Efficient Synthesis of 蟺-Conjugated Enamines

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• 作者：Atsushi Tahara ; Yasumitsu Miyamoto ; Ryuta Aoto ; Keisuke Shigeta ; Yuta Une ; Yusuke Sunada ; Yukihiro Motoyama ; Hideo Nagashima
• 刊名：Organometallics
• 出版年：2015
• 出版时间：October 26, 2015
• 年：2015
• 卷：34
• 期：20
• 页码：4895-4907
• 全文大小：580K
• ISSN：1520-6041

文摘

The appropriate design of a ligand (L) in IrCl(CO)(L)₂ (4) realized the efficient synthesis of 蟺-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.