Nair, Vijay ; Biju, A. T. ; Mohanan, Kishor ; Suresh, Eringathodi (2006) Novel synthesis of highly functionalized pyrazolines and pyrazoles by triphenylphosphine-mediated reaction of dialkyl azodicarboxylate with allenic esters Organic Letters, 8 (1). pp. 2213-2216. ISSN 1523-7060
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Official URL: http://pubs.acs.org/doi/abs/10.1021/ol0604623
Related URL: http://dx.doi.org/10.1021/ol0604623
Abstract
Reaction of the Huisgen zwitterion, derived from triphenylphosphine and dialkyl azodicarboxylate, with allenic esters affords highly functionalized pyrazolines and pyrazoles. The crystal structure of pyrazoline derivative 7a showed extensive C-H···O interactions. Pyrazole formation proceeds via a novel nitrogen to carbon migration of the carboalkoxy group.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Chemical Society. |
| ID Code: | 84089 |
| Deposited On: | 24 Feb 2012 06:15 |
| Last Modified: | 24 Feb 2012 06:15 |
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