in Wiley Online Library (wileyonlinelibrary.com).Derivatives of ninhydrin are extensively used in the field of forensic sciences as important latent fingerprint reagents. Many works have been performed upon their synthesis and reactivity, but there are many spaces to work on the compounds of quinoline-2,3,4(1H)-triones-analogues of ninhydrin, in both dimensions: synthesis and reactivity, and according to the best of our knowledge, not a single detailed or short compiled article has been published for these compounds. This review briefly summarizes the chemistry of quinoline-2,3,4(1H)-triones.Scheme 4. Photochemical approach to synthesize quinoline-2,3,4(1H)triones (4) with singlet oxygen. MB, methylene blue; RB, rose bengal.Scheme 5. Thermal approach to synthesize quinoline-2,3,4(1H)-triones (4) form 4-hydroxyquinolin-2(1H)-ones (5) using phenyliodine(III) diacetate as oxidizing agent. Scheme 6. Reactions of quinoline-2,3,4(1H)-triones (4) with diazoalkanes. THF, tetrahydrofuran.