under mild conditions. Ethyl 4-decenoate was subsequently applied as a second model substrate to identify challenges associated with the longer chain length of the unsaturated ester. Finally, methyl oleate was converted using the developed catalyst system. High aldehyde yields of 74% (at 99% conversion) with an l/b-ratio of 91/9 are obtained.
在本文中,我们报道了异构化/加氢甲酰化串联反应的发展,以选择性地将
脂肪酸甲酯转化为不对称的α,ω-官能化醛酯。以3-
己酸甲酯为模型底物,开发了由
钯基异构化催化剂和
铑基羰基化催化剂组成的正交串联催化体系。使用这种催化剂,产率高(转化率99%时为81%)和区域选择性(l / b在温和条件下,通过3-
己酸甲酯的转化,获得了98/2)与所需的末端加氢甲酰化产物的比率。随后将
4-癸烯酸乙酯用作第二种模型底物,以鉴定与不饱和酯的较长链长相关的挑战。最后,使用开发的催化剂体系转化
油酸甲酯。获得的高醛产率为74%(在99%的转化率下),l / b比率为91/9。