Synthesis of Non-Conjugated Trienes via In Situ Hydrovinylation/Wittig Olefination of Unsaturated Phosphonium Salts
作者:Gerhard Hilt、Monika Ballmann、Felicia Weber、Lars Sattler
DOI:10.1055/s-0036-1591878
日期:2018.4
good to excellent yields. The hydrovinylation provides regioselectively diene structures with one exo double bond whereas the third double bond can be introduced via an in situ Wittig or Horner–Wadsworth–Emmons olefination leading to 1,4,7-trienes suitable for further double bond functionalisations. A cobalt-catalysed 1,4-hydrovinylation reaction is successfully applied in a sequential three-component
专用于汉斯-于尔根舍费尔教授在他的80之际个生日。 抽象的 钴催化的1,4-氢乙烯基化反应成功地用于不饱和溴化,、 1,3-二烯和醛的连续三组分转化,从而得到具有1,4-二烯亚基的非共轭产物优异的产量。氢乙烯基化为区域选择性的二烯结构提供了一个外切双键,而第三个双键可以通过原位Wittig或Horner-Wadsworth-Emmons烯烃引入,从而生成适合进一步双键官能化的1,4,7-三烯。 钴催化的1,4-氢乙烯基化反应成功地用于不饱和溴化,、 1,3-二烯和醛的连续三组分转化,从而得到具有1,4-二烯亚基的非共轭产物优异的产量。氢乙烯基化为区域选择性的二烯结构提供了一个外切双键,而第三个双键可以通过原位Wittig或Horner-Wadsworth-Emmons烯烃引入,从而生成适合进一步双键官能化的1,4,7-三烯。