4-アミノ-5-クロロ-2,3-ジヒドロベンゾフラン-7-カルボン酸 化学特性,用途語,生産方法
外観
白色~黄赤色~緑色粉末~結晶
合成
Firstly, adding methyl 4-(acetyl amino)-2-hydroxy-3-(2-hydroxy ethyl) benzoate into an organic solvent, adding triphenylphosphine and azo dioctyl phthalate diethyl ester, performing cyclization to obtain a methyl 4-acetamido-2,3-dihydro benzofuran-7-formate rough product, directly chloridizing the rough product by using N-chloro succinimide to obtain a rough product methyl 4-acetamide amino-5-chloro-7-benzofuran formate, and performing hydrolysis and purification to obtain a 4-amino-5-chloro-2,3-dihydrobenzofuran-7-carboxylic acid pure product.
4-アミノ-5-クロロ-2,3-ジヒドロベンゾフラン-7-カルボン酸 上流と下流の製品情報
原材料
準備製品