derived from 5-attack. Trinuclear product confirmed the presence of a linear structure of these condensate. Similar results were also obtained from dinuclear product separated from commercial product (Daxad 15-Grace).
由
2-萘磺酸和
甲醛形成的酸催化缩合反应得到低分子量的低聚物。双核混合物的光谱学(NMR)研究证实了5,5'- 8,8'-和5,8'-亚甲基双-
2-萘磺酸的存在,其中大部分产物来自5-攻击。三核产物证实了这些冷凝物的线性结构的存在。从商业产品(Daxad 15-Grace)中分离出的双核产品也获得了相似的结果。