Compounds containing α-dicarbonyl groups are rendered capable of fluorescent emission by conjugation with carboxylic acid-terminated orth-diaminoaryl reagents. The carboxylic acid groups serve as ionizable moieties which facilitate the conjugation reaction, and are retained in the conjugation product to enable, or enhance the ability of, the conjugated compounds to be separated in chromatographic and electro-migration separation processes, notably electrophoresis. Ortho-dinitro derivatives of the reagents are also disclosed, these derivatives offering the advantage of stability as well as the ability to be used directly in the reaction in the presence of a reducing agent.
含有α-二羰基的化合物通过与
羧酸封端的邻二
氨基芳基试剂共轭,可发出荧光。
羧酸基团作为可电离的分子促进共轭反应,并保留在共轭产物中,使共轭化合物在色谱和电迁移分离过程(尤其是电泳)中得以分离或提高分离能力。此外,还公开了试剂的正二硝基衍
生物,这些衍
生物具有稳定性强以及可在还原剂存在下直接用于反应的优点。