PROCESS FOR PREPARATION OF ESCULETIN COMPOUNDS, ESCULETIN COMPOUNDS AND INTERMEDIATES THEREOF, AND USE OF BOTH

摘要

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): <CHEM> characterized by cyclizing a trihydroxybenzaldehyde compound of the formula (1): <CHEM> in an aprotic polar solvent in the presence of a weak base, with acetic anhydride or the like.