Stereoselective Synthesis of 2Z,4E-Configured Dienoates through Tethered Ring Closing Metathesis
作者:Bernd Schmidt、Stephan Audörsch、Oliver Kunz
DOI:10.1055/s-0035-1562536
日期:——
is described. The sequence involves Steglich esterification of the reactants, followed by a one-pot ring closing metathesis–base induced elimination–alkylation reaction to furnish the products in high stereoselectivity. Trapping of the intermediate sodium carboxylates is accomplished efficiently using Meerwein’s salt Et3OBF4. A two-step sequence leading from racemic allylic alcohols and vinylacetic
摘要 描述了从外消旋烯丙醇和乙烯基乙酸到(2 Z,4 E)二烯酸乙酯的两步序列。该序列涉及反应物的Steglich酯化,然后是一锅闭环易位-碱基诱导的消除-烷基化反应,以高立体选择性提供产物。使用Meerwein盐Et 3 OBF 4可以有效地完成中间体羧酸钠的捕集。 描述了从外消旋烯丙醇和乙烯基乙酸到(2 Z,4 E)二烯酸乙酯的两步序列。该序列涉及反应物的Steglich酯化,然后是一锅闭环易位-碱基诱导的消除-烷基化反应,以高立体选择性提供产物。使用Meerwein盐Et 3 OBF 4可以有效地完成中间体羧酸钠的捕集。