Role of Halide Ions in Divalent Palladium-Mediated Reactions: Competition between -Heteroatom Elimination and ![]()
详细信息 查看全文
- 作者：Zhaoguo Zhang ; Xiyan Lu ; Zhenrong Xu ; Qinghai Zhang ; and Xiuling Han
- 刊名：Organometallics
- 出版年：2001
- 出版时间：August 20, 2001
- 年：2001
- 卷：20
- 期：17
- 页码：3724 - 3728
- 全文大小：78K
- 年卷期：v.20,no.17(August 20, 2001)
- ISSN：1520-6041
文摘
The integral role of halide ions as a ligand in the reactions of stoichiometric arylpalladiumreagents and Pd(II)-catalyzed reaction of phenylmercuric acetate with various allyliccompounds were studied. The halide ion was found to inhibit 
-H elimination and promote-heteroatom elimination in acidic media. In this reaction, a C-Pd intermediate with a-heteroatom (including halogen, acetoxy, alkoxy, and hydroxyl groups) gives only -heteroatom elimination product in the presence of halide ions, while -H elimination is effectivelyblocked.
-H elimination and promote-heteroatom elimination in acidic media. In this reaction, a C-Pd intermediate with a-heteroatom (including halogen, acetoxy, alkoxy, and hydroxyl groups) gives only -heteroatom elimination product in the presence of halide ions, while -H elimination is effectivelyblocked.