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http://localhost:8080/xmlui/handle/123456789/2173| Title: | Novel synthesis of highly functionalized pyrazolines and pyrazoles by triphenylphosphine-mediated reaction of dialkyl azodicarboxylate with allenic esters |
| Authors: | Vijay Nair, G Biju, A T Kishor Mohanan Suresh, E |
| Keywords: | Phosphine catalyzed synthesis Mitsunobu reaction Diethyl azodicarboxylate Carbonyl compounds 4+2 Annulation Cycloaddition |
| Issue Date: | 2006 |
| Publisher: | American Chemical Society |
| Citation: | Organic Letters 8(11):2213-2216;25 May 2006 |
| 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 center dot center dot center dot O interactions. Pyrazole formation proceeds via a novel nitrogen to carbon migration of the carboalkoxy group. |
| URI: | http://ir.niist.res.in:8080/jspui/handle/123456789/2173 |
| ISSN: | 1523-7060 |
| Appears in Collections: | 2006 |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2006_0148.pdf Restricted Access | 145.33 kB | Adobe PDF | View/Open Request a copy |
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