摘要 : Copper benzenesulfonate was found to be an effective catalyst for one-pot three-component cyclocon-densation of isatoic anhydride, aromatic aldehydes, and ammonium salts or primary amines in aqueous solution to afford the correspo... 展开 Copper benzenesulfonate was found to be an effective catalyst for one-pot three-component cyclocon-densation of isatoic anhydride, aromatic aldehydes, and ammonium salts or primary amines in aqueous solution to afford the corresponding mono- and disubstituted 2,3-di-hydroquinazolin-4(1H)-ones in good yields. The catalyst is reusable and could be recycled for several times without distinct decrease in its efficiency. 收起