期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 131, 期 22, 页码 7558-+出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja902893u
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资金
- Achievement Rewards for College Scientists (ARCS) Foundation Stanford Graduate Fellowship
- NIH
- Pfizer
- Amgen
- GlaxoSmithKline
Catalytic amination of saturated C-H bonds is performed efficiently with the use of Rh-2(esp)(2). Efforts to identify pathways for catalyst degradation and/or arrest have revealed a single-electron oxidation event that gives rise to a red-colored, mixed-valence dimer, [Rh-2(esp)(2)](+). This species is fortuitously reduced by carboxylic acid, a byproduct generated in the reaction cycle with each turnover of the diacyloxyiodine oxidant. These findings have led to the conclusion that the high performance of Rh-2(esp)(2) is due in part to the superior kinetic stability of its one-electron oxidized form relative to other dimeric Rh complexes.
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