71344-33-7Relevant academic research and scientific papers
Mono- and Di-Mesoionic Carbene-Boranes: Synthesis, Structures and Utility as Reducing Agents
Stein, Felix,Kirsch, Marius,Beerhues, Julia,Albold, Uta,Sarkar, Biprajit
, p. 2417 - 2424 (2021/06/17)
Mesoionic carbenes (MIC) of the 1,2,3-triazol-5-ylidene type are currently popular ligands in organometallic chemistry. Their use in main group chemistry has been rather limited. In this contribution we present mono- and di-MIC-boranes with MICs based on triazolylidenes. The synthesis involves in-situ deprotonation of the corresponding triazolium salts and their reaction with boranes to form the desired compounds. Whereas this reaction route worked well for all triazolium salts derived from the 1,4-regioisomer of the triazoles, for the methlyene-bridged bi-triazolium salt derived from a 1,5-substiuted triazole, we observed the unexpected decomposition of the bi-triazolium and the formation of a triazole-borane with a new N?B bond. All compounds were characterized via multinuclear NMR spectroscopy, mass spectrometry, and single crystal X-ray diffraction. Furthermore, the MIC-boranes were used as reducing agents for the reduction of the C=O of aldehydes to the corresponding alcohols.
Bis(1,2,3-triazol-5-ylidenes)(i-bitz) as stable 1,4-bidentate ligands based on mesoionic carbenes (MICs)
Guisado-Barrios, Gregorio,Bouffard, Jean,Donnadieu, Bruno,Bertrand, Guy
, p. 6017 - 6021 (2012/01/14)
Direct metalation of bis(1,2,3-triazolium) salts affords mononuclear rhodium(I) complexes, which feature a 1,4-bidentate bis(1,2,3-triazol-5-ylidene) (i-bitz) ligand. The topology of the ligand is similar to that of 2,20-bipyridines (bpy) and their congen
Microwave-assisted stille reactions as a powerful tool for building polyheteroaryl systems bearing a (1H)-1,2,4-triazole moiety
Cebrian,De Cozar,Prieto,Diaz-Ortiz,De La Hoz,Carrillo,Rodriguez,Montilla
supporting information; experimental part, p. 55 - 60 (2010/07/16)
Stille couplings and the combination of Stille/Heck cross-coupling reactions provide useful access to tricyclic systems with valuable material properties from 3, 5-dibromo-1,2,4-triazoles. The reactions can all be dramatically improved under microwave irradiation. Georg Thieme Verlag Stuttgart.
Synthesis, characterisation and ligand properties of novel Bi-1,2,3-triazole ligands
Monkowius, Uwe,Ritter, Stefan,Koenig, Burkhard,Zabel, Manfred,Yersin, Hartmut
, p. 4597 - 4606 (2008/03/18)
Three 1,1′-disubstituted 4,4′-bi-1H-1,2,3-triazols [R-bta; R = Bn (1), Ph (2), CH2COOH (3)] have been synthesised as bidentate, nitrogen-based ligands by a CuI-catalysed "click" reaction between 1,3-butadiyne and organic azides. Thei
