Selective Synthesis of
<i>Z</i>
‐Cinnamyl Ethers and Cinnamyl Alcohols through Visible Light‐Promoted Photocatalytic
<i>E</i>
to
<i>Z</i>
Isomerization
作者:Hengchao Li、Hang Chen、Yang Zhou、Jin Huang、Jundan Yi、Hongcai Zhao、Wei Wang、Linhai Jing
DOI:10.1002/asia.201901778
日期:2020.3.2
A photocatalytic E to Z isomerization of alkenes using an iridium photosensitizer under mild reaction conditions is disclosed. This method provides scalable and efficient access to Z-cinnamyl ether and allylic alcohol derivatives in high yields with excellent stereoselectivity. Importantly, this method also provides a powerful strategy for the selective synthesis of Z-magnolol and honokiol derivatives
公开了在温和的反应条件下使用铱光敏剂的烯烃的光催化E至Z异构化。该方法提供了可扩展且有效的途径,以优异的立体选择性高产率地获得了Z-肉桂基醚和烯丙醇衍生物。重要的是,该方法还为选择性合成具有潜在生物活性的Z-厚朴酚和厚朴酚衍生物提供了强有力的策略。