The reaction of 2,4-dinitrobenzaldehyde with hydroxide ion in water is first order in the substrate. The reaction order in hydroxide ion varies from one to two at lower and higher OH- concentrations, respectively. The reaction mechanism has been suggested, the pKa value of reaction product 2-nitro-4-nitrosophenol and the equilibrium constant of formation of the Meisenheimer adduct from 2-nitro-4-nitrosophenoxide and hydroxide ion have been determined.
2,4-二硝基苯甲醛与
水中的氢氧根离子的反应在底物中是一阶反应。氢氧根离子的反应次数在较低和较高的OH-浓度下分别变化为一到二。已经提出了反应机制,已确定了反应产物2-硝基-
4-亚硝基苯酚的pKa值以及从2-硝基-
4-亚硝基苯酚酸根和氢氧根离子形成Meisenheimer加合物的平衡常数。