A dibenzothiazepine compound is suitably prepared by subjecting a 2-amino-2′-carboxy-diphenylsulfide compound to dehydration-condensation reaction in the presence of an acidic catalyst; the 2-amino-2′-carboxy-diphenylsulfide compound is suitably prepared by reducing a 2-nitro-2′-carboxy-diphenylsulfide compound in a lower aliphatic ester solvent; and the 2-nitro-2′-carboxy-diphenylsulfide compound is suitably prepared by reacting a nitrobenzene compound with a thiosalicylic acid compound in a mixture of a lower aliphatic alcohol and water.
通过在酸性催化剂的存在下,将2-
氨基-2'-羧基
二苯硫醚化合物进行脱
水缩合反应,可以适当地制备二苯并
噻吩类化合物;2-
氨基-2'-羧基
二苯硫醚化合物可以通过在较低的脂肪酯溶剂中还原2-硝基-2'-羧基
二苯硫醚化合物来适当地制备;而2-硝基-2'-羧基
二苯硫醚化合物可以通过在较低
脂肪醇和
水的混合物中,将
硝基苯化合物与
硫代水杨酸类化合物反应来适当地制备。