A variety of (tetrahydrofuran-2-yl)acetates have been prepared based on hydrogenation and subsequent nucleophilic substitutions of 2-alkylidene-5-(hydroxymethyl)tetrahydrofurans. The latter are readily available by cyclization of 1,3-dicarbonyl dianions (“free dianions”) with epibromohydrin. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
基于 2-亚烷基-5-(羟甲基)
四氢呋喃的氢化和随后的亲核取代,已经制备了多种(
四氢呋喃-2-基)
乙酸酯。后者很容易通过 1,3-二羰基二价阴离子(“游离二价阴离子”)与表
溴醇环化而获得。(© Wiley-
VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)