Five derivative dyes from the parent dyes were obtained by similar nucleophilic substitution reaction in which five primary amines were employed as the nucleophilic reagent.
将母体染料的中位氯原子用氨基试剂亲核取代，衍生合成了五个中位仲胺七甲川菁染料。
2
This paper is to discuss the higher-order derivative of many-variables abstract composite function, and to put forward the easy method to this type of questions through substitution.
对多元抽象复合函数的高阶求导进行了讨论，利用代换的思想，得到了对其进行高阶求导的简便易行的方法。
3
Carbon, nitrogen, and chalcogen substitution effects on 2, 1, 3-benzothiadiazole derivative: theoretical investigations of electronic, optical, and charge transport properties.