Provided are a method for producing a terminal conjugated dienal compound without an oxidation reaction and a terminal hydroxyacetal compound useful as an intermediate in the method. More specifically, provided are a method for producing an (E)-dienal compound comprising the steps of: a metalation reaction of an alkynal acetal compound (1) to obtain an organic metal compound (2), an addition reaction of (2) to ethylene oxide to obtain a hydroxyalkynal acetal compound (3), a reduction reaction of (3) to obtain an (E)-hydroxyalkenal acetal compound (4), a functional group conversion reaction of (4) to obtain an (E)-alkenal acetal compound (5) having a leaving group X, an elimination reaction of (5) to obtain an (E)-dienal acetal compound (6), and a hydrolysis reaction of (6) to obtain the (E)-dienal compound (7); and others.
提供了一种无需氧化反应的生产末端共轭二烯醛化合物和末端羟基
缩醛化合物的方法。更具体地,提供了一种生产(E)-二烯醛化合物的方法,包括以下步骤:将炔醛
缩醛化合物(1)进行
金属化反应以得到有机
金属化合物(2),将(2)加入到
环氧乙烷中进行加成反应以得到羟基炔醛
缩醛化合物(3),将(3)进行还原反应以得到(E)-羟基烯醛
缩醛化合物(4),将(4)进行官能团转化反应以得到具有离去基X的(E)-烯醛
缩醛化合物(5),将(5)进行消除反应以得到(E)-二烯醛
缩醛化合物(6),最后进行
水解反应以得到(E)-二烯醛化合物(7);还包括其他步骤。