Regiospecific synthesis of arenofurans via cascade reactions of arenols with Morita–Baylis–Hillman acetates of nitroalkenes and total synthesis of isoparvifuran
作者:Tarun Kumar、Shaikh M. Mobin、Irishi N.N. Namboothiri
DOI:10.1016/j.tet.2013.04.023
日期:2013.6
A cascade process involving an SN2′ reaction and an intramolecular oxa-Michael addition has been developed by treating Morita–Baylis–Hillman acetates of nitroalkenes with arenols, such as β-naphthols, α-naphthols, and substituted phenols under basic conditions. The products, arenofurans, are formed as single regioisomers in good to excellent yield in most cases. The methodology has been successfully
通过在碱性条件下用戊烯(如β-萘酚,α-萘酚和取代酚)处理硝基烯烃的Morita-Baylis-Hillman乙酸酯,已开发出一种涉及S N 2'反应和分子内氧杂-Michael加成的级联过程。在大多数情况下,苯并呋喃类产品以单一的区域异构体形式形成,收率好至极佳。该方法已成功地用于抗真菌剂异戊呋喃的全合成。