期刊
ORGANOMETALLICS
卷 31, 期 5, 页码 2053-2058出版社
AMER CHEMICAL SOC
DOI: 10.1021/om300024p
关键词
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资金
- Spanish Ministerio de Ciencia e Innovacion [CTQ2008-06647, CTQ2009-14186]
- FEDER
- Xunta de Galicia [PDGIDIT07P-XIB314174PR]
The individual steps of a model Pd-catalyzed Negishi coupling between vinyl bromide and MeZnClS2 (S = THF), using Pd(PMe3)(2) as catalyst, have been examined with the aid of DFT computations in THF solution with the B97D functional to gain further insight into the role of Pd-Zn interactions on the oxidative addition and reductive elimination steps. Comparisons between such processes taking place on monometallic Pd complexes and on bimetallic Pd-Zn complexes reveal a detrimental effect of Pd-Zn interactions in oxidative addition, whereas reductive elimination is favored by Pd-Zn cooperativity. Additionally, a cis transmetalation pathway has been characterized that complements previous studies involving trans complexes.
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