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):
1
characterized by cyclizing a trihydroxybenzaldehyde compound of the formula (1):
2
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
香豆素化合物的过程,以及包含
香豆素化合物或其中间体的杀菌剂和
除草剂用于农业和园艺的抗真菌组合物。制造
香豆素化合物的过程是一种低成本、高产率和工业实用的过程,包括以下步骤:在无
水极性溶剂中,在弱碱存在下,用
乙酸酐或类似物环化式(1)的三羟基
苯甲醛化合物,制造式(2)的
香豆素化合物。