Alkali Metal Hydridotriphenylborates [(L)M][HBPh3] (M = Li, Na, K): Chemoselective Catalysts for Carbonyl and CO2 Hydroboration

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• 作者：Debabrata Mukherjee ; Hassan Osseili ; Thomas P. Spaniol ; Jun Okuda
• 刊名：Journal of the American Chemical Society
• 出版年：2016
• 出版时间：August 31, 2016
• 年：2016
• 卷：138
• 期：34
• 页码：10790-10793
• 全文大小：346K
• 年卷期：0
• ISSN：1520-5126

文摘

Light alkali metal hydridotriphenylborates M[HBPh₃] (M = Li, Na, K), characterized as tris{2-(dimethylamino)ethyl}amine (L) complexes [(L)M][HBPh₃], act as efficient catalysts for the chemoselective hydroboration of a wide range of aldehydes and ketones using pinacolborane HBpin. The lithium derivative showed a remarkably high TOF of ≥17 s^–1. These compounds also catalyze the hydroborative reduction of CO₂ to give formoxyborane HCO₂Bpin without any over-reduction.