Studies on Aldol Reactions of Nortropinone Derivatives in Solution and on Solid Phase
作者:Ryszard Lazny、Aneta Nodzewska、Michal Sienkiewicz
DOI:10.2174/157017810790533887
日期:2010.1.1
Polymer-anchored (Merrifield, trityl chloride, Wang p-nitrophenyl carbonate and triazene supports) nortropinone, or N-protected nortropinone derivatives in solution, were subjected to deprotonation with LDA or chiral lithium amides, and the resulting lithium enolates were trapped with an aldehyde. The aldols were obtained with moderate to good yields (44-84%) and enantioselectivities (44-86% ee).
聚合物锚定的(Merrifield、三苯甲基氯、Wang 对硝基苯基碳酸酯和三氮烯载体)去甲托品酮或溶液中的 N-保护的去甲托品酮衍生物,用 LDA 或手性氨基锂进行去质子化,得到的烯醇锂被醛捕获. 以中等至良好的产率 (44-84%) 和对映选择性 (44-86% ee) 获得羟醛。