Organogold(III) Iminophosphorane Complexes as Efficient Catalysts in the Addition of 2-Methylfuran and Electron-Rich Arenes to Methyl Vinyl Ketone
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- 作者：David Aguilar ; Marí ; a Contel ; Rafael Navarro ; Esteban P. Urriolabeitia
- 刊名：Organometallics
- 出版年：2007
- 出版时间：August 27, 2007
- 年：2007
- 卷：26
- 期：18
- 页码：4604 - 4611
- 全文大小：119K
- 年卷期：v.26,no.18(August 27, 2007)
- ISSN：1520-6041
文摘
Cycloaurated compounds containing C,N-pincer ligands have been evaluated as precatalysts in theaddition reactions of 2-methylfuran and some electron-rich arenes to methyl vinyl ketone. All complexeshave displayed a catalytic activity comparable to that reported for Au(I) complexes in the presence ofsilver salts. Compounds containing iminophosphorane ligands (R3P=NR') as C,N-backbones such as[Au{
2-C,N-C6H4(PPh2=N(C6H4X)-2}Cl2] (X = H, 13; X = Me, 14) have been found to be the moreeffective in both the presence and absence of silver salts. With acid-sensitive electron-rich arenes thecatalytic activity of these cycloaurated complexes outperformed that of the AuCl3 salt. The synthesis andcharacterization of new iminophosphorane coordination and organogold(III) compounds are providedalong with the results for the catalytic studies.
2-C,N-C6H4(PPh2=N(C6H4X)-2}Cl2] (X = H, 13; X = Me, 14) have been found to be the moreeffective in both the presence and absence of silver salts. With acid-sensitive electron-rich arenes thecatalytic activity of these cycloaurated complexes outperformed that of the AuCl3 salt. The synthesis andcharacterization of new iminophosphorane coordination and organogold(III) compounds are providedalong with the results for the catalytic studies.