PROBLEM TO BE SOLVED: To provide a new 4-trifluoromethylindole-3-acetic acid having a plant growth regulation action, its ester derivative or metal salt and its use.SOLUTION: The method for preparing a 4-trifluoromethylindole-3-acetic acid represented by general formula 1 (wherein R is hydrogen, an alkyl group, an alkenyl group or a metal salt) or its derivative is provided. The plant growth agent comprises the compound as an active ingredient and has a strong promotion action on formation of plant root. Consequently, the new compound has strong promotion action on rooting, is synthesized in a large amount and exhibits strong auxin activity at low concentration. The new plant growth regulator comprises the compound as an active ingredient.COPYRIGHT: (C)2009,JPO&INPIT【課題】植物成長調節作用を有する新規4-トリフルオロメチルインドール-3-酢酸、そのエステル誘導体や金属塩及びその用途を提供する。【解決手段】式1の一般式(式中、Rは水素、アルキル基、アルケニル基、又は金属塩を示す)で示される4-トリフルオロメチルインドール-3-酢酸とその誘導体の調製方法及びこれらを有効成分とする植物の根の形成を強く促進する作用を有する植物成長剤。【化1】【効果】強力な発根促進活性を有し、大量合成が可能であり、低濃度で、強いオーキシン活性を示す新規化合物及び該化合物を有効成分とする新規植物成長調節剤を提供する。【選択図】なし
