Yadav, J. S. ; Reddy, B. V. S. ; Narayana Reddy, P. (2004) Rhodium acetate dimer immobilized in 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid: a novel and recyclable catalytic system for the cyclopropanation of alkenes Advanced Synthesis & Catalysis, 346 (1). pp. 53-56. ISSN 1615-4150
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/adsc.20...
Related URL: http://dx.doi.org/10.1002/adsc.200303136
Abstract
Alkenes undergo smooth cyclopropanation with ethyl diazoacetate using a catalytic amount of rhodium acetate dimer, Rh2(OAc)4, immobilized in the air- and moisture-stable 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid, [bmim]PF6, to afford cyclopropanecarboxylates in excellent yields with high trans-selectivity. The recovery of the catalyst is facilitated by the hydrophobic nature of [bmim]PF6. The recovered ionic liquid containing Rh2(OAc)4 can be reused for three to five subsequent runs with only a gradual decrease in activity.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | Alkenes; Carbene Insertion; Cyclopropanation; Cyclopropanecarboxylic Esters; Diazo Compounds; Ionic Liquids (ILs) |
| ID Code: | 63132 |
| Deposited On: | 28 Sep 2011 03:23 |
| Last Modified: | 28 Sep 2011 03:23 |
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