作者:Tuyen Nguyen Van、Silvia Debenedetti、Norbert De Kimpe
DOI:10.1016/s0040-4039(03)00902-x
日期:2003.5
A novel generally applicable synthesis of coumarins from phenolic substrates utilizing ring-closing metathesis is described. This sequence involves O-allylation of phenols followed by ortho-Claisen rearrangement, subsequent based-induced isomerization affording 2-(1-propenyl)phenols, acylation with acryloyl chloride, and finally ring-closing metathesis (RCM) with Grubbs’ second generation catalyst
描述了一种利用闭环易位从酚类底物合成香豆素的新的普遍适用的合成方法。该序列涉及苯酚的O-烯丙基化,然后进行邻-克莱森重排,随后进行基于碱的诱导异构化,得到2-(1-丙烯基)苯酚,与丙烯酰氯进行酰化,最后用Grubbs的第二代催化剂进行闭环复分解(RCM)。 。