Further reactions of t-butyl 3-oxobutanthioate and t-butyl 4-diethyl-phosphono-3-oxobutanthioate : Carbonyl coupling reactions, amination, use in the preparation of 3-acyltetramic acids and application to the total synthesis of fuligorubin A.
作者:Steven V. Ley、Stephen C. Smith、Peter R. Woodward
DOI:10.1016/s0040-4020(01)88210-7
日期:1992.1
for the preparation of homologated derivatives suitable for amination in the presence of silver (I) trifluoroacetate to afford the corresponding β-ketoamides is discussed. In particular Wadsworth-Emmons coupling reactions of (2) with various carbonyl compounds gave good yields of E-substituted products. Many of the β-ketoamides were shown to be suitable precursors for 3-acyltetramic acids using a Dieckmann
3-氧代丁氧硫醇叔丁酯(1)和4-二乙基氧代-3-氧杂丁硫醇叔丁酯(2)的制备适合于在三氟乙酸银(I)存在下进行胺化的同系化衍生物,得到相应的β讨论了β-酮酰胺。特别地,(2)与各种羰基化合物的Wadsworth-Emmons偶联反应给出了良好的E-取代产物收率。使用Dieckmann环化反应,以四正丁基氟化铵为环化碱,发现许多β-酮酰胺是3-酰基四酸的合适前体。这些新的反应应用于多烯3-酰基四酸富叶红素A的全合成。