WebApr 28, 2004 · The preparation of annulated furan systems as key synthetic intermediates through the application of a two-step annulation involving an electrochemical ring closure ... Synthesis of 2-Alkenyl-3-(alkoxycarbonyl)furans Based on Feist−Benary Cyclocondensation of (2,4-Dioxobutylidene)phosphoranes with α-Haloketones and α … WebApr 25, 2013 · A modified Feist–Bénary furan synthesis has been developed that involves a lithium aldol reaction between a methyl ketone and an α‐chloroaldehyde followed by a thermally induced tetrahydrofuran formation/dehydration sequence and affords 2,5‐disubstituted furans in good overall yield.
Feist–Bénary furan synthesis SpringerLink
WebNov 3, 2024 · The synthesis of the furan ring can be carried out in two steps, starting from the pentoses of oat hulls. The first step consists of a catalyzed dehydration reaction in acidic medium. ... The Feist-Benary synthesis consists of a reaction between an α-haloketone with 1,3-dicarbonyl (β-dicarbonyl) compounds in which an aldol condensation occurs ... WebJun 13, 2012 · The formation of intermediate 10 and subsequent aromatization to the furan 11 are consistent with the mechanism of the Feist–Bénary furan synthesis. 15 This does not usually involve enamine formation, which would be expected to give the corresponding pyrrole (Scheme 5). 2-Chloropropanal also gave the furan product (entry 9), although … fielding chemical technologies inc careers
Feist–Benary synthesis - Wikipedia
WebFeist–Bénary furan synthesis, the reaction between α-halocarbonyl and β-dicarbonyl compounds, has been known as an efficient method for … WebJan 1, 2009 · Feist–Bénary furan synthesis Feist–Bénary furan synthesis. Jie Jack Li 2 Chapter; First ... WebA modified Feist-Bénary furan synthesis has been developed that involves a lithium aldol reaction between a methyl ketone and an α-chloroaldehyde followed by a thermally induced tetrahydrofuran formation/dehydration sequence and affords 2,5-disubstituted furans in good overall yield. This process is demonstrated on multigram scale and is ... fielding chemicals