An efficient carbanionic synthesis of the phosphonic dicarbonylated compounds 2 was achieved and used as key intermediates in the synthesis of the phosphonic furans 4 by acid-induced Paal-Knorr cyclization reaction.
Pudowik et al., Zhurnal Obshchei Khimii, 1957, vol. 27, p. 2367,2369,2370;engl.Ausg.S.2427,2429
作者:Pudowik et al.
DOI:——
日期:——
A Facile Approach to Alkyl- and Aryl-Substituted 3-Furylphosphonates Based on Ceric Ammonium Nitrate-Promoted Radical Reactions
Regioselectively substituted diethyl 3-furylphosphonates have been prepared in good yields (55-90%) under very mild conditions by a simple two-step procedure based on ceric ammonium nitrate-promoted oxidative addition of β-ketophosphonates to vinylic acetates followed by acid catalyzed Pall-Knorr cyclization reactions.