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.
Process for preparation of esculetin compounds, esculetin compounds and intermediates thereof, and use of both
申请人:——
公开号:US20040049056A1
公开(公告)日:2004-03-11
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.