Yadav, J. S. ; Subba Reddy, B. V. ; Purnima, K. V. ; Nagaiah, K. ; Lingaiah, N. (2008) Cu-exchanged phosphotungestic acid: an efficient and reusable heteropoly acid for the cyclopropanation of alkenes via C-H insertion Journal of Molecular Catalysis A: Chemical, 285 (1-2). pp. 36-40. ISSN 1381-1169
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.molcata.2007.12.029
Abstract
Alkenes undergo smooth cyclopropanation with ethyl diazoacetate using a catalytic amount of Cu-exchanged phosphotungestic acid (Cu-TPA) in dichloromethane under mild reaction conditions to afford cyclopropanecarboxylates in high yields with moderate selectivity. The catalyst is recycled and reused for three to four subsequent runs with a minimal decrease of activity.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Carbene Insertion; Cyclopropanation; Cyclopropane Carboxylates |
| ID Code: | 60383 |
| Deposited On: | 09 Sep 2011 03:56 |
| Last Modified: | 09 Sep 2011 03:56 |
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