As an &agr;-iminoester derivative that is stable under normal conditions and a method of producing various &agr;-aminoester derivatives using them, a polymer-immobilized &agr;-iminoester derivative represented by the following general formula (1)
1
(wherein R
1
represents an alkyl chain of 1 or more carbons, and R
2
represents a hydrogen atom, halogen atom, or an alkyl group, aryl group or alkoxy group that may contain substituents), and a method of producing an &agr;-iminoester derivative using them are provided.
                            作为一种在正常条件下稳定的&agr;-
亚胺酯衍
生物和一种用其生产各种&agr;-
亚胺酯衍
生物的方法,由以下通式(1)代表的聚合物固定化&agr;-
亚胺酯衍
生物
1
(其中R
1
代表一个或多个碳原子的烷基链,R
2
代表氢原子、卤素原子或可含有取代基的烷基、芳基或烷氧基),并提供了使用它们生产&agr;-
亚胺酯衍
生物的方法。