Substrate-controlled product-selectivity in the reaction of Bestmann-Ohira reagent with N-unprotected isatin-derived olefins

Gupta, A K; Ahamad, Shakir; Gupta, Ekta; Kant, Ruchir; Mohanan, Kishor

dc.contributor.author	Gupta, A K
dc.contributor.author	Ahamad, Shakir
dc.contributor.author	Gupta, Ekta
dc.contributor.author	Kant, Ruchir
dc.contributor.author	Mohanan, Kishor
dc.date.accessioned	2016-03-31T11:18:27Z
dc.date.available	2016-03-31T11:18:27Z
dc.date.issued	2015
dc.identifier.citation	Organic & Bimolecular Chemistry, 2015, 13, 9783–9788	en
dc.identifier.uri	http://hdl.handle.net/123456789/1613
dc.description.abstract	A mild and efficient reaction of Bestmann-Ohira reagent with N-unprotected isatin-derived olefins has been developed for the selective synthesis of spiro-pyrazoline-oxindoles and tricyclic pyrazoles. The reaction features an attractive product-selectivity depending on the substituent on isatin-derived olefin. Treatment of 3-aryl/alkylideneoxindoles with BOR afforded spiropyrazoline-oxindoles, whereas 3-phenacylideneoxindoles furnished pyrazoloquinazolinones via a unique ring expansion reaction.	en
dc.format.extent	258698 bytes
dc.format.mimetype	application/pdf
dc.language.iso	en	en
dc.relation.ispartofseries	CSIR-CDRI communication no 9043	en
dc.subject	Bestmann-Ohira reagent	en
dc.subject	Tricyclic pyrazoles	en
dc.subject	Isatin-derived olefin	en
dc.subject	Organophosphorus	en
dc.subject	olefins	en
dc.title	Substrate-controlled product-selectivity in the reaction of Bestmann-Ohira reagent with N-unprotected isatin-derived olefins	en
dc.type	Article	en