Versatile Synthesis of Acylfuranones by Reaction of Acylketenes with α-Hydroxy Ketones: Application to the One-Step Multicomponent Synthesis of Cadiolide B and Its Analogues
Functionalized acylfuranones have been prepared in a one-step procedure by thermal fragmentation of the corresponding dioxinones in the presence of hydroxy ketones in basic conditions. Multicomponentreactions also occur on addition of an aldehyde as a third reaction partner resulting in an expeditious access to cadiolideB and itsanalogues.
在碱性条件下,在羟基酮的存在下,通过相应的二恶英酮的热裂解,以一步法制备了官能化的酰基呋喃酮。添加醛作为第三个反应伙伴时也会发生多组分反应,从而快速获得卡地内酯 B 及其类似物。