Pyrimidine is an aromatic heterocyclic organic compound similar to pyridine. One of the three diazines (six-membered heterocyclics with two nitrogen atoms in the ring), it has the nitrogen atoms at positions 1 and 3 in the ring. 1722-12-9, formula is C4H3ClN2, Name is 2-Chloropyrimidine. The pyrimidine ring system has wide occurrence in nature as substituted and ring fused compounds and derivatives, including the nucleotides cytosine, thymine and uracil, thiamine (vitamin B1) and alloxan. Quality Control of 1722-12-9.
Lin, Qiqiao;Huang, Xiaoguang;Ramachandran, Sasikumar;Wang, Xinyang;Boonsin, Rachod;Khendriche, Yasmine;Valleix, Rodolphe;Roblin, Jean-Philippe;Boyer, Damien;Chadeyron, Genevieve;Zucchi, Gael research published 《 2,2′-Bipyrimidine as a Building Block for the Design of Emissive Conjugated Polymers for Hybrid LED Lighting》, the research content is summarized as follows. This work introduces 2,2′-bipyrimidine as an acceptor unit in the design of donor-acceptor conjugated polymers. Regularly alternating this moiety with the electron-rich 2,7-dihexyl fluorene and 3,6-carbazole units lead to polymers P1 and P2, resp., which both showed a red-shifted emission with respect to the parent polyfluorene and polycarbazole derivatives Investigations on the thermal properties showed that P1 and P2 both possess decomposition temperatures higher than 250°C under a mixture of N2 and O2. P1 was used as a representative example of this family of conjugated polymers to design white-emitting materials, both in solution and in the solid state. P1 and P2 were investigated as phosphors for LED lighting. Two composite films elaborated with P1 and P2 embedded into a PMMA matrix labeled P1c and P2c, resp., were irradiated with a 375 nm-LED at a power as high as 48 W/m2. P1c was found to show a lower photostability. Two ways to improve the stability under UV exposure were investigated. On the one hand, replacing 2,7-dihexyl fluorene by 3,6-hexyl carbazole approx. improved the photostability by a factor of 2, while, on the other hand, embedding the polymers into a liquid sol-gel hybrid matrix allowed an improvement of the stability by a factor of 3. We could obtain a stabilization of the intensity of P2c at ca. half of its initial intensity, thus showing an improvement of the photostability of more than five times with respect to pure P1.
Quality Control of 1722-12-9, 2-Chloropyrimidine is a monochlorinated pyrimidine with plant growth regulating activity. Chloropyrimidine is a useful reagent in the preparation of antivirals and other biologically active compounds.
2-Chloropyrimidine undergoes cobalt-catalyzed cross-coupling reaction with aryl halides.
2-Chloropyrimidine is a molecule that can be synthesized by the oxidation of pyrimidine with hydrogen peroxide and hydrochloric acid. The reaction proceeds through an electrochemical process in which the oxidation catalyst is a platinum electrode. This reaction is catalyzed by the nucleophilic attack of malonic acid on the chloropyrimidine at the methylene group. This efficient method for making 2-chloropyrimidine has been applied to synthesize aryl halides, including phenyl chloropyrimidine and pyridyl chloropyrimidine, from their corresponding chloride and bromide precursors. The fluorescence properties of 2-chloropyrimidine have been studied in coordination chemistry, where it forms complexes with metal ions such as Mn2+. In this study, it was found that adsorption mechanisms are dependent on molecular size, charge density, kinetic energy, and adsorbent surface area., 1722-12-9.
Referemce:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia