作者:Felix Busqué、Pedro de March、Marta Figueredo、Josep Font、Lluïsa González
DOI:10.1002/ejoc.200300693
日期:2004.4
Several new 4-thio-4,5-dihydro-2(3H)-furanones were prepared by the conjugate addition reactions of different thioacids, dithioacids, xanthates and dithiocarbamates to 2(5H)-furanones. When 5-methyl-2(5H)-furanone was used as the electrophilic substrate, the reaction was diastereoselective affording exclusively the cis-α,β-disubstituted butanolides. Some adducts were selectively hydrolysed to deliver
通过不同的硫代酸、二硫代酸、黄原酸盐和二硫代氨基甲酸酯与 2(5H)-呋喃酮的共轭加成反应,制备了几种新的 4-硫代-4,5-二氢-2(3H)-呋喃酮。当 5-甲基-2(5H)-呋喃酮用作亲电底物时,该反应是非对映选择性的,仅提供顺式-α,β-二取代丁醇内酯。一些加合物被选择性水解以提供游离的硫醇官能团。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)