نتایج جستجو برای: triazine derivatives
تعداد نتایج: 107238 فیلتر نتایج به سال:
Convenient syntheses of mono- and bis-imidazolium 1,3,5-triazine derivatives bearing piperidine and morpholine substituents are reported. In situ deprotonation of the mono-imidazolium salts and reaction with Ag2O or Au(tht)Cl (tht = tetrahydrothiophene) precursors affords the corresponding Ag(NHC)Cl and Au(NHC)Cl carbene complexes. In the presence of Ag(I) or Au(I) salts the bis-imidazolium pin...
Bleaching of polymeric materials can be achieved by blending or surface treatment with fluorescent brighteners, FBs [1]. In both cases the FB migrates with time, and the degree of whiteness decreases. The introduction of polymerizable groups into the FB makes it applicable in the copolymerization process with vinyl monomers, resulting in the formation of covalent bonds in the polymer molecule. ...
A novel series of isatin-s-triazine hydrazone derivatives has been synthesized and reported herein. The synthetic methodology involved the reaction s-triazine hydrazine precursors with isatin in presence CH3COOH as a catalyst EtOH solvent to afford corresponding target products 6a-e high yields purities. characterization data obtained from elemental analysis, FT-IR, NMR (1H- 13C-) were full agr...
In this study, s-triazine rings (or their derivatives) were introduced into a two-dimensional phase-separated mixed monolayer of hydrocarbon-fluorocarbon chains. The diamino-triazine ring facilitated the absorption deoxyribonucleic acid (DNA) molecules in monolayer. diamino ring-containing copolymers which hydrogenated hydrophobic chain was able to form mixed-phase-separated monolayers when com...
The reaction of cyanoacetylhydrazine with chloroacetone gave the N-(1-chloropropan-2-ylidene)-2-cyanoacetohydrazide. This compound reacted with either hydrazine hydrate or phenylhydrazine to give the corresponding 1,2,4-triazine derivatives. On the other hand, its reaction with either benzenediazonium chloride or benzaldehyde gave in each case the 1,3,4-oxadiazine derivatives. Moreover, the rea...
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