In aqueous solution at 25 °C 9-formylfluorene is present mainly as its enol (72%, KE= 17) and hydrate (24%, Kh= 5.6); the unstable aldehyde (4%) may be generated for kinetic and equilibrium measurements by reaction of its ethanethiol hemithioacetal with iodine.
在25°C的水溶液中,存在9-甲酰基芴,主要是其烯醇(72%,K E = 17)和水合物(24%,K h = 5.6);不稳定的醛(4%)可通过其乙硫醇半硫缩醛与碘反应生成,用于动力学和平衡测量。