Novel synthesis of highly functionalized pyrazolines and pyrazoles by triphenylphosphine-mediated reaction of dialkyl azodicarboxylate with allenic esters

dc.contributor.author	Vijay Nair, G
dc.contributor.author	Biju, A T
dc.contributor.author	Kishor Mohanan
dc.contributor.author	Suresh, E
dc.date.accessioned	2016-01-18T07:59:58Z
dc.date.available	2016-01-18T07:59:58Z
dc.date.issued	2006
dc.identifier.citation	Organic Letters 8(11):2213-2216;25 May 2006	en_US
dc.identifier.issn	1523-7060
dc.identifier.uri	http://ir.niist.res.in:8080/jspui/handle/123456789/2173
dc.description.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.	en_US
dc.language.iso	en	en_US
dc.publisher	American Chemical Society	en_US
dc.subject	Phosphine catalyzed synthesis	en_US
dc.subject	Mitsunobu reaction	en_US
dc.subject	Diethyl azodicarboxylate	en_US
dc.subject	Carbonyl compounds	en_US
dc.subject	4+2 Annulation	en_US
dc.subject	Cycloaddition	en_US
dc.title	Novel synthesis of highly functionalized pyrazolines and pyrazoles by triphenylphosphine-mediated reaction of dialkyl azodicarboxylate with allenic esters	en_US
dc.type	Article	en_US