Experimental and computational study of a direct O2-coupled Wacker oxidation: water dependence in the absence of Cu salts.

Experimental and computational study of a direct O2-coupled Wacker oxidation: water dependence in the absence of Cu salts.
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DOI:
10.1021/ja1057218
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发表时间:
2010-09-01
影响因子:
15
通讯作者:
Sigman MS
Sigman MS
中科院分区:
化学1区
文献类型:
--
作者:
Anderson BJ;Keith JA;Sigman MS

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研究了在没有铜盐和高[Cl-]的情况下,以氧为唯一氧化剂,Pd[(-)-sparteine]Cl2催化十二烯氧化的动力学。观察了[癸烯]的饱和动力学以及对[水]的三级依赖。在计算研究的支持下,提出了一种机制,涉及两个氯化物的解离和三水氢桥网络的限速形成以及随后的泛化。
The kinetics of the Pd[(–)-sparteine]Cl2 catalyzed oxidation of decene using oxygen as the sole oxidant have been studied in the absence of copper salts and high [Cl-]. Saturation kinetics are observed for [decene] as well as a third order dependence on [water]. A mechanism is proposed involving the dissociation of two chlorides and rate-limiting formation of a three-water hydrogen bridged network and subsequent oxypalladation as supported by computational studies.
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