The synthesis of N-alkyl-1H-1,2,4-triazoles from N,N-dialkylhydrazones and nitriles via formal [3+2] cycloaddition including the C-chlorination/nucleophilic addition/cyclisation/dealkylation sequence was developed. This sequential reaction utilising the in situ generation of hydrazonoyl chloride based on the ambiphilic reactivity of hydrazones afforded a variety of multi-substituted N-alkyl-triazoles
Benzisoselenazol-3(2H)-ones and<i>bis</i>(2-Carbamoyl)phenyl Diselenides as New Catalysts for Hydrogen Peroxide Oxidation of Organic Compounds
作者:Jacek Mlochowski、Miroslaw Giurg、Elzbieta Kubicz、Samy B. Said
DOI:10.1080/00397919608003617
日期:1996.1
Abstract Bis (2-carbamoyl)phenyl diselenides and benzisoselenazol-3(2H)-ones, particularly ebselen, have been found as new catalysts for hydrogen peroxide oxidation of sulfides into sulfoxides, N,N-dimethylhydrazones into nitriles, and azines into carbonyl compounds.
Mazza; Montanari; Pavanetto, Farmaco, Edizione Scientifica, 1976, vol. 31, # 5, p. 334 - 344
作者:Mazza、Montanari、Pavanetto
DOI:——
日期:——
Use of Hemilabile N,N Ligands in Nitrogen-Directed Iridium-Catalyzed Borylations of Arenes
作者:Abel Ros、Beatriz Estepa、Rocío López-Rodríguez、Eleuterio Álvarez、Rosario Fernández、José M. Lassaletta
DOI:10.1002/anie.201104544
日期:2011.12.2
The hemilabile character of 2‐pyridyl carbaldehyde hydrazones as N,N bidentate ligands is key to performing regioselective IrIII‐catalyzed ortho borylations of 2‐aryl pyridines(isoquinolines) and aromatic N,N‐dimethylhydrazones (see scheme; pin=pinacol, Bn=benzyl). Internal “ate” complexes or products free from NB interactions are formed depending on the steric properties of the substrates.