As a plant growth accelerator offer of new manufacturing method of useful phenyl alkyl succinic acid amide. General system (1)(In formula, R1 and R2 becoming independent respectively, the hydrogen atom and the halogen atom, hydroxyl group, shows alkoxy group or the alkyl group, R3 shows the hydrogen atom or the carboxyl group, n shows number 0 - 3)So in the nutrient medium which contains the phenyl alkyl amines which are displayed, it features that the microbe which belongs to bacillus chiyuringenshisu or bacillus sereusu which possesses phenyl alkyl succinic acid amide synthetic talent is cultured, general system (2)(In formula, R1, as for R2 and n the same as the description above)So the phenyl alkyl succinic acid amide compound or the manufacturing method of that salt which is displayed.植物成長促進剤として有用なフェニルアルキルコハク酸アミドの新たな製法の提供。一般式(1)(式中、R1及びR2はそれぞれ独立して水素原子、ハロゲン原子、水酸基、アルコキシ基又はアルキル基を示し、R3は水素原子又はカルボキシル基を示し、nは0~3の数を示す)で表されるフェニルアルキルアミン類を含有する培地中で、フェニルアルキルコハク酸アミド合成能を有するバチルス・チューリンゲンシス又はバチルス・セレウスに属する微生物を培養することを特徴とする、一般式(2)(式中、R1、R2及びnは前記と同じ)で表されるフェニルアルキルコハク酸アミド化合物又はその塩の製造法。
