288254-83-1Relevant articles and documents
17O NMR studies of substituted 1,3,4-oxadiazoles
Gierczyk, Blazej,Zalas, MacIej,Kazmierczak, Marcin,Grajewski, Jakub,Pankiewicz, Radoslaw,Wyrzykiewicz, Bozena
experimental part, p. 648 - 654 (2012/01/06)
Three series of substituted 1,3,4-oxadiazoles were studied by 17O NMR spectroscopy. Chemical shifts values were correlated with empirical Hammett parameters as well as calculated bond lengths and chemical shielding values.
Direct microwave synthesis of N,N′-diacylhydrazines and boc-protected hydrazides by in situ carbonylations under air
Herrero, Maria Antonia,Wannberg, Johan,Larhed, Mats
, p. 2335 - 2338 (2007/10/03)
Palladium-catalyzed hydrazidocarbonylations of aryl iodides and bromides were performed by controlled microwave irradiation, employing Mo(CO)6 as a convenient CO source. A fluorous phosphine ligand was succesfully used to recycle the catalytic
Regioselectivity in the thermal rearrangement of unsymmetrical 4-methyl-4H-1,2,4-triazoles to 1-methyl-1H-1,2,4-triazoles
Gautun, Odd R.,Carlsen, Per H.J.
, p. 969 - 978 (2007/10/03)
The rearrangement of 4-methyl-3,5-diaryl-4H-1,2,4-triazoles to the corresponding 1-methyl-3,5-diaryl-1H-1,2,4-triazoles showed regioselectivity comparable to that observed for the alkylation of 3,5-diaryl-1H-1,2,4-triazoles. This lends support to a proposed mechanism for the rearrangement that involves consecutive nucleophilic displacements steps.