117226-98-9Relevant academic research and scientific papers
Hypervalent iodine promoted transformation of 4H-chromenes into dihydrofurans and 2H-chromenes
Kale, Ashok,Medishetti, Nagaraju,Nanubolu, Jagadeesh Babu,Atmakur, Krishnaiah
, p. 3264 - 3275 (2020)
A novel protocol to synthetic transformation of 4H-chromenes into dihydrofurans (3) and 2H-chromenes (11) promoted by hypervalent iodine has been accomplished in a one-pot reaction at ambient temperature. Dihydrofurans are exclusively formed under basic reaction conditions, whereas, 2H-chromenes are the products under acidic condition. Simple reaction conditions with a broad substrate scope inclusive of various heterocycles and high yields are the attractive features of this protocol.
A Facile Preparation of Alkylpyridines from Aminopyrans
Marugan, Monica M.,Martin, Nazario,Seoane, Carlos,Soto, Jose L.
, p. 145 - 150 (2007/10/02)
Alkyl-substituted pyridinones 4, pyrones 5, dihydropyridinones 2, and pyridines 6 are prepared by means of ring transformation of alkyl-substituted 2-amino-4H-purans 1.Some open-chain intermediates (3) as well as the aromatization of the partially unsatur
