An Efficient Synthesis of Resveratrol and a Hydroxyl Derivative via the Perkin Reaction: <i>cis</i> to <i>trans</i> Isomerisation in a Demethylation Process
作者:Guoxing Li、Yong Zou、Xuejing Zhang
DOI:10.3184/030823407x266234
日期:2007.11
Two trans polyphenolic stilbenes, Resveratrol and 3,4,4′,5- trans-tetrahydroxystilbene, were prepared in three steps from 4-methoxy phenylacetic acid and methoxylated benzaldehydes via a Perkin reaction. An interesting cis to trans isomerisation occured in the demethylation process in the presence of AlI3 and acetonitrile to give resveratrol and 3,4,4′,5-trans-tetrahydroxystilbene with overall yields
两种反式多酚芪,白藜芦醇和 3,4,4',5- 反式四羟基芪,通过 Perkin 反应从 4-甲氧基苯乙酸和甲氧基化苯甲醛分三步制备。在 AlI3 和乙腈的存在下,在去甲基化过程中发生了有趣的顺反异构化,得到白藜芦醇和 3,4,4',5-反式四羟基芪,总产率分别为 51% 和 48%。