期刊
ORGANOMETALLICS
卷 32, 期 4, 页码 1000-1015出版社
AMER CHEMICAL SOC
DOI: 10.1021/om300921q
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资金
- Russian Academy of Sciences, P-8 Program
- Academician K. I. Zamaraev Foundation
Dehydrogenation of alcohols by three iridium pincer complexes, IrH(Cl)[2,6-((Bu2PO)-Bu-t)(2)C6H3] (1), {IrH-(acetone)[2,6-((Bu2PO)-Bu-t)(2)C6H3]}{BF4} (2), and IrH(Cl)[{2,5-((Bu2PCH2)-Bu-t)(2)C5H2}Ru(C5H5)] (3), is reported, in both the presence and the absence of a sacrificial hydrogen acceptor. Dehydrogenation of secondary alcohols proceeds in a catalytic mode with turnover numbers up to 3420 (85% conversion) for acceptorless dehydrogenation of 1-phenylethanol. Primary alcohols are readily decarbonylated even at room temperature to give catalytically inactive 16e Ir-GO adducts. The mechanism of this transformation was studied in detail, especially for EtOH; new intermediates were isolated and characterized.
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