METHOD FOR PRODUCING α-CHLOROACRYLIC ACID ESTER

• Main Authors: SHIRAI ATSUSHI, HIRANO AKIHISA, OGATA AKITOSHI, KUROKI MASACHIKA
• Format: Patent
• Language: English; Japanese
• Published: 22.03.2024
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

To provide, e.g., a method for producing an α-chloroacrylic acid ester excellent in productivity and the like.SOLUTION: The present invention discloses a method for producing a compound that is represented by the formula (2) in the figure, the method comprising a step A in which a compound that is represented by the formula (1) in the figure is reacted with chlorine in the presence of a polar solvent. (In the formulas, R1 and R2 each independently represent a hydrogen atom or an organic group, or R1 and R2 are bonded to each other to form a ring together with the neighboring carbon atom; and R3 represents an alkyl group which may have one or more substituents, an aryl group which may have one or more substituents, or an aralkyl group which may have one or more substituents.)SELECTED DRAWING: None 【課題】生産性等に優れたα－クロロアクリル酸エステル類の製造方法等の提供。【解決手段】下記式（２）で表される化合物を製造する方法であって、極性溶媒の存在下、下記式（１）で表される化合物を塩素と反応させる工程Ａを含む方法が開示される。TIFF2024039602000032.tif21170（式中、Ｒ１及びＲ２は、それぞれ独立して、水素原子又は有機基であるか、或いは、Ｒ１及びＲ２は、互いに結合して、隣接する炭素原子と共に環を形成しており、Ｒ３は、１個以上の置換基を有していてもよいアルキル基、１個以上の置換基を有していてもよいアリール基、又は１個以上の置換基を有していてもよいアラルキル基である。）【選択図】なし