Citric acid was used as green, non-toxic and reusable catalyst for the preparation of substituted 2,3- dihydroquinazolin-4(1H)ones in high purity and good yields via one-pot three-component reaction of isatoic anhydride with a variety of aldehydes and primary amines or ammonium acetate in water at 80 ° C.
利用
柠檬酸作为绿色、无毒和可重复使用的催化剂,通过异酸酐与多种
醛类和
伯胺或
醋酸铵在 80 ° C
水中的一锅三组分反应,制备了纯度高、收率好的取代型 2,3-二氢
喹唑啉-4(1H)。