PROCESS FOR PREPARATION OF ESCULETIN COMPOUNDS, ESCULETIN COMPOUNDS AND INTERMEDIATES THEREOF, AND USE OF BOTH
申请人:Kureha Chemical Industry Co., Ltd.
公开号:EP1357118A1
公开(公告)日:2003-10-29
An esculetin compound, an intermediate thereof, a process for manufacturing an esculetin compound, and an antifungal composition for agriculture and horticulture and an herbicide comprising an esculetin compound or an intermediate thereof are provided. The process for manufacturing an esculetin compound is a low-cost, high-yield, and industrially practicable process, and comprises the following step.
A process for manufacturing an esculetin compound of the formula (2):
characterized by cyclizing a trihydroxybenzaldehyde compound of the formula (1):
in an aprotic polar solvent in the presence of a weak base, with acetic anhydride or the like.
提供了一种香豆素化合物、其中间体、制造香豆素化合物的方法,以及用于农业和园艺的抗真菌组合物和包含香豆素化合物或其中间体的除草剂。制造香豆素化合物的方法是一种低成本、高产率且工业可行的方法,包括以下步骤。制造化合物的过程是通过在无极性溶剂中的弱碱存在下使式(1)的三羟基苯甲醛化合物环化,使用乙酸酐等。