2348-70-1Relevant articles and documents
Palladium and Copper Cocatalyzed Intermolecular Cyclization Reaction: Synthesis of 5-Aminopyrazole Derivatives
Ma, Chaowei,Wen, Ping,Li, Jihui,Han, Xu,Wu, Zhaoyang,Huang, Guosheng
, p. 1073 - 1077 (2016/04/09)
A novel and efficient palladium and copper co-catalyzed intermolecular cyclization of acetonitriles with hydrazones has been developed for the synthesis of 5-aminopyrazoles through C-C and C-N bond formation. The reaction has the advantages of easily avai
Studies towards the synthesis of Fipronil analogues: Improved decarboxylation of α-hydrazonoacid derivatives
Ancel,El Ka?m,Gadras,Grimaud,Jana
, p. 8319 - 8321 (2007/10/03)
The Mannich reaction of hydrazones coupled with a [4+1] cycloaddition with isocyanides has been used for the synthesis of aminopyrazole analogues of Fipronil. The starting cyanohydrazone was prepared with new experimental conditions for efficient diazonium coupling in fluorinated solvents followed by a new sodium cyanide catalysed decarboxylation.
Structural Studies on 3-Acetyl-1,5-Diaryl and 3-Cyano-1,5-Diaryl Formazan Chelates with Cerium(III), Thorium(IV) and Uranium(VI)
Sherif, O. E.,Issa, Y. M.,Hassouna, M. E. M.,Abass, S. M.
, p. 627 - 636 (2007/10/02)
Solid complexes of 3-acetyl-1,5-diaryl and 3-cyano-1,5-diaryl formazans were prepared and characterized by elemental analysis, IR, NMR, TGA and DTA analyses.Based on these studies, the suggested general formula for the complexes is -)n or (NO3- or Cl-)x*(H2O)y or (C2H5OH or DMSO)z, where HL = formazan M = Ce3+, Th4+, and UO22+, m = 1-2, n = 0-3, x = 0-3, y = 0-4 and z = 0-3.The metal ions are expected to have coordination numbers 6-8. - Keywords: Complexes of 3-acetyl and 3-cyano formazans; Ce(III); Th(IV); U(VI)
