To provide a process for producing a (4E)-5-chloro-2-isopropyl-4-pentenoate in high yield and efficiently.
A compound (2) is reacted with a base in the presence of an aprotic solvent and then with (1E)-1,3-dichloro-1-propene in the same reaction vessel to obtain a compound (3), and then either of -COOR moieties in the compound (3) is replaced with a hydrogen atom in the same reaction vessel to obtain a compound (4):
wherein R is a lower alkyl group or an aralkyl group.
提供一种高产率、高效率生产 (4E)-5-chloro-2-isopropyl-4-pentenoate 的工艺。
化合物(2)在无相溶剂存在下与碱反应,然后在同一反应容器中与(1E)-1,3-二
氯-
1-丙烯反应,得到化合物(3),然后在同一反应容器中用氢原子取代化合物(3)中的-COOR 分子中的任一分子,得到化合物(4):
其中 R 是低级烷基或芳烷基。