Base-Controlled Selective Conversion of Michael Adducts of Malonates with Enones in the Presence of Iodine
作者:Chun-Bao Miao、Min Zhang、Zong-Yong Tian、Hai-Tao Xi、Xiao-Qiang Sun、Hai-Tao Yang
DOI:10.1021/jo201879t
日期:2011.12.2
An efficient base-controlled selective conversion of the Michael adducts of malonates with enones in the presence of iodine is reported. Highly functionalized cyclopropane, oxetane, and α-hydroxylmalonate derivatives are obtained selectively using DBU, Na2CO3, and NaOAc as the base, respectively. O2 was identified to be crucial to the formation of oxetane and α-hydroxylmalonate derivatives.
据报道在碘存在下,丙二酸酯的迈克尔加成物与烯酮的有效的碱控制的选择性转化。分别使用DBU,Na 2 CO 3和NaOAc作为碱分别选择性地获得高度官能化的环丙烷,氧杂环丁烷和α-羟基丙二酸酯衍生物。O 2被确定对于氧杂环丁烷和α-羟基丙二酸酯衍生物的形成至关重要。