کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
66941 | 48458 | 2010 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: From homogeneously to heterogeneously catalyzed cyclopropanation reactions: New polymeric membranes embedding cobalt chiral schiff base complexes From homogeneously to heterogeneously catalyzed cyclopropanation reactions: New polymeric membranes embedding cobalt chiral schiff base complexes](/preview/png/66941.png)
In this paper we report the preparation of catalytic polymeric membranes having the complex [(N,N′-bis(3-tert-butyl-5-(heptadecafluorooctyl)salicylidene)-trans-1,2-cyclohexanediamine)Co] embedded into Hyflon AD60X, PES and PSf and their use in the cyclopropanation reaction of olefins with ethyl diazoacetate (EDA). A study of the reaction in the homogeneous phase was also performed. The kinetics of the cyclopropanation reaction is first-order in the diazoacetate and the catalyst and zero order in the olefin, but we observed a more complex dependence on the additive, NMI (N-methylimidazole). The positive effect of the additive is completely reversed at NMI concentration higher than 6·10−2 M.
The new catalytic membranes having the complex [(N,N′-bis(3-tert-butyl-5-(heptadecafluorooctyl)salicylidene)-trans-1,2-cyclohexanediamine)Co] embedded into Hyflon AD60X, PES and PSf have been prepared and characterized and their use in the cyclopropanation reaction of olefins with ethyl diazoacetate (EDA) is reported.Figure optionsDownload high-quality image (73 K)Download as PowerPoint slide
Journal: Journal of Molecular Catalysis A: Chemical - Volume 317, Issues 1–2, 15 February 2010, Pages 72–80