Ligand-Enhanced Aliphatic Carbon−Carbon Bond Activation of Nitroxides by Rhodium(II) Porphyrin

Ligand-Enhanced Aliphatic Carbon−Carbon Bond Activation of Nitroxides by Rhodium(II) Porphyrin
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铑(II)卟啉配体增强脂肪族碳-碳键活化硝基氧化物

DOI:
10.1021/om1000869
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发表时间:
2010
期刊:
影响因子:
2.8
通讯作者:
Siu Yin Lee
Siu Yin Lee
中科院分区:
化学2区
文献类型:
--
作者:
K. Chan;X. Li;Siu Yin Lee

文献摘要

被引文献

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Rh(tmp) 经历了 Ph3P 增强的脂肪族碳-碳键与各种硝基氧的活化。 (Ph3P)Rh(tmp) 由 Rh(tmp) 和 Ph3P 快速形成,与 Rh(tmp) 相比,提高了速率、选择性和产率。根据动力学研究,反应速率显示出对 Rh(tmp) 和 TEMPO(TEMPO = 2,2,6,6-四甲基哌啶-1-氧基)的一级依赖性以及对 Ph3P 的饱和动力学。在 70 °C 时,(Ph3P)Rh(tmp) 相对于 Rh(tmp) 的速率增强约为 11。
Rh(tmp) underwent Ph3P-enhanced aliphatic carbon−carbon bond activation with various nitroxides. (Ph3P)Rh(tmp), rapidly formed from Rh(tmp) and Ph3P, enhanced the rate, selectivity, and yield in comparison to Rh(tmp). From kinetic studies, the rate of reaction showed a first-order dependence on both Rh(tmp) and TEMPO (TEMPO = 2,2,6,6-tetramethylpiperidine-1-oxyl) and saturation kinetics on Ph3P. The rate enhancement of (Ph3P)Rh(tmp) over Rh(tmp) was estimated to be about 11 at 70 °C.