Petrov S. Development of a technology for derivative of oxazol-5-ones based on alfa, beta-unsaturated ketones

The dissertation is devoted to the development of a technology for oxazole-5-ones based on alfa, beta-unsaturated ketonespreparation and their use as fluorescent dyes for plastics. The results of studying the laws of reactions on б, в-unsaturated ketones and diamines are represented. It is shown that an effective method of increasing the yield of the product is the optimal conditions selection.The most importantof them are the temperature mode and the reaction duration.Testing the compounds as organic luminophores the fluorescence spectra was determined, and the luminescence quantum yields were set. The characteristics comparison of the prepared luminophores and known analogs on a range of luminescence indicates that the luminescence intensity of the investigated compounds is in 3...6.5 times higher than that of 3-metoxybenzantrone, which is selected as the existing analogue. At the same time, the emission spectrum inside them is almost the same. Furthermore, these compounds have fluorescent properties, not only in the crystalline state, as their counterparts, but also in solutions of different polarity. Due to the increased luminescence intensity and high resistance to light of synthesized compounds may improve the sensitivity and effectiveness of control methods in the areas of technology, which uses the fluorescent properties of the compounds. As a result of the study, the compounds of a number of benzol-1,4-bis-2-phenyl-4-cinnamoiliden-oxazol-5-one derivatives have properties of high-performance organic luminophores and may be used as colorants for plastics. The optimal process conditions. The technology of luminophores derivatives of mono- and bisoxazalone. Technology of synthesis the final product includes two chemical steps - the first is the preparation of intermediates of 2-phenyl-4-tsinnamoilidenoksazol-5-one and benzyl 1,4-bis-2-phenyl-4-tsinnamoilidenoksazol-5-one, which were synthesized by reacting hippuric acid with the appropriate aldehyde. Second Stage - Preparation of the final products were synthesized by reacting the intermediates with a number of diamines. A flow chart of the preparation of products. The results are aimed at the development of promising directions of chemical science and industrial production - technology of organic dyes and phosphor, and can be used in research, engineering and manufacturing relevant organizations.