Search results for "triazol"
showing 10 items of 598 documents
Sustainable Construction of Heterocyclic 1,2,3-Triazoles by Strict Click [3+2] Cycloaddition Reactions Between Azides and Alkynes on Copper/Carbon in…
2019
1,4-Disubstituted-1,2,3-triazoles, considered as an important and useful class of heterocycles with potential applications in material science and biology, have been prepared in an efficient and selective manner by copper on carbon-catalyzed [3+2] cycloaddition reactions of azides and alkynes (CuAAC) in water under strict click chemistry conditions. Copper(I) catalysts heterogenized onto commercially activated carbon materials (Cu-CC) and on another carbon material produced from vegetable biomass using Argan nut shells (Cu-CANS) were found to be versatile catalytic sources for sustainable CuAAC. These copper on carbon supports were prepared and fully characterized by using two types of acti…
Base-Controlled Regiospecific Mono-Benzylation/Allylation and Diallylation of 4-Aryl-5-indolyl-1,2,4-triazole-3-thione : Thio-Aza Allyl Rearrangement
2023
The regiospecific S-benzylation/allylation of two 4-aryl-5-indolyl-1,2,4-triazole-3-thione precursors was carried out using Et3N as a base. Allyl group migration from exocyclic sulfur to the triazole nitrogen (N3) was successfully achieved in a short time via thermal fusion without the need for any catalyst. The allylation of indole nitrogen, along with exocyclic sulfur or triazole nitrogen (N3), was carried out using K2CO3 as stronger base. S,N-Diallylated products were converted to N,N-diallylated analogues using a simple fusion approach. Structural analyses of the two newly synthesized hybrids 2b and 5b investigated via the X-ray diffraction of a single crystal combined with Hirshfeld ca…
Non-covalent interactions in organotin(IV) derivatives of 5,7-ditertbutyl- and 5,7-diphenyl-1,2,4-triazolo[1,5-a]pyrimidine as recognition motifs in …
2011
Non-covalent interactions are known to play a key role in biological compounds due to their stabilization of the tertiary and quaternary structure of proteins [1]. Ligands similar to purine rings, such as triazolo pyrimidine ones, are very versatile in their interactions with metals and can act as model systems for natural bio-inorganic compounds [2]. A considerable series (twelve novel compounds are reported) of 5,7-ditertbutyl-1,2,4-triazolo[1,5-a]pyrimidine (dbtp) and 5,7-diphenyl- 1,2,4-triazolo[1,5-a]pyrimidine (dptp) were synthesized and investigated by FT-IR and 119Sn Mössbauer in the solid state and by 1H and 13C NMR spectroscopy, in solution [3]. The X-ray crystal and molecular str…
The synthesis of fluorinated heteroaromatic compounds. Part 1. Five-membered rings with more than two heteroatoms. A review
2005
(2005). THE SYNTHESIS OF FLUORINATED HETEROAROMATIC COMPOUNDS. PART 1. FIVE-MEMBERED RINGS WITH MORE THAN TWO HETEROATOMS. A REVIEW. Organic Preparations and Procedures International: Vol. 37, No. 5, pp. 447-506.
CCDC 806635: Experimental Crystal Structure Determination
2011
Related Article: S.Zeghada, G.Bentabed-Ababsa, A.Derdour, S.Abdelmounim, L.R.Domingo, J.A.Saez, T.Roisnel, E.Nassar, F.Mongin|2011|Org.Biomol.Chem.|9|4295|doi:10.1039/c1ob05176h
CCDC 726493: Experimental Crystal Structure Determination
2009
Related Article: B.R.D.Nayagam, S.R.Jebas, J.E.Rajkumar, D.Schollmeyer|2009|Acta Crystallogr.,Sect.E:Struct.Rep.Online|65|o917|doi:10.1107/S1600536809010794
CCDC 889877: Experimental Crystal Structure Determination
2012
Related Article: S.R.Jebas, P.Selvarathy Grace, B.Ravindran Durai Nayagam, D.Schollmeyer|2012|Acta Crystallogr.,Sect.E:Struct.Rep.Online|68|o2239|doi:10.1107/S1600536812028395
CCDC 877279: Experimental Crystal Structure Determination
2012
Related Article: P.Selvarathy Grace, S.R.Jebas, B.Ravindran Durai Nayagam, D.Schollmeyer|2012|Acta Crystallogr.,Sect.E:Struct.Rep.Online|68|o1132|doi:10.1107/S1600536812010951
catena-Poly[[(18-crown-6-κ6O)potassium]-μ-chlorido-[(1H-benzotriazol-1-ol-κN3)chloridoplatinum(II)]-μ-(benzotriazol-1-olato-κ2N3:O)]
2010
In the structure of the title compound, [KPt(C6H4N3O)Cl2(C6H5N3O)(C12H24O6)], the PtII atom is in a distorted square-planar geometry. The crystal structure is consolidated by O—H⋯O hydrogen bonds. The measured crystal was a non-merohedral twin with four components.
CCDC 127015: Experimental Crystal Structure Determination
2000
Related Article: S.E.Mallakpour, H.Kolshorn, D.Schollmeyer, R.Stadler|1997|Macromol.Chem.Phys.|198|251|doi:10.1002/macp.1997.021980203