Isomerisation of 伪-pinene oxide in the presence of indenyl allyl dicarbonyl molybdenum(II) and tungsten(II) complexes

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• 作者：Sofia M. Bruno^a ; Carla A. Gamelas^b ; ^c ; Ana C. Gomes^a ; Anabela A. Valente^a ; Martyn Pillinger^a ; Carlos C. Romã ; o^b ; Isabel S. Gon&ccedil ; alves^a ; ^{igoncalves@ua.pt}
• 关键词：Indenyl complexes ; Group 6 metals ; Lewis acid catalysts ; 伪-Pinene oxide ; Isomerisation ; Campholenic aldehyde
• 刊名：Catalysis Communications
• 出版年：2012
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：5 June, 2012
• 卷：23
• 期：Complete
• 页码：58-61
• 文件大小：297 K

摘要

The indenyl complexes IndM(畏³-C₃H₅)(CO)₂ (M = Mo (1), W (2)), (IndMe)Mo(畏³-C₃H₅)(CO)₂ (3) and (IndSiMe₃)Mo(畏³-C₃H₅)(CO)₂ (4) display catalytic activity for the isomerisation of 伪-pinene oxide. Conversion reached 97%after 3 h at 35 掳C in the presence of 1 and 1,2-dichloroethane as solvent, giving campholenic aldehyde in 56%yield. Solvent polarity and basicity appear to affect the reaction rate. Whereas the type of substituent on the indenyl ligand does not appear to have a strong impact on catalytic performance, changing the metal centre from Mo (1) to W (2) gave a significantly more active catalyst.