Heterogeneous Copper(I)-Catalyzed Cascade Addition–Oxidative Cyclization of Nitriles with 2-Aminopyridines or Amidines: Efficient and Practical Synthesis of 1,2,4-Triazoles
作者:Jianhui Xia、Xue Huang、Mingzhong Cai
DOI:10.1055/s-0037-1611712
日期:2019.5
addition-oxidative cyclization of nitriles with 2-aminopyridines or amidines was achieved in 1,2-dichlorobenzene or DMSO at 120–130 °C by using a 1,10-phenanthroline-functionalized MCM-41-supported copper(I) complex [Phen-MCM-41-CuBr] as the catalyst and air as the oxidant. The approach was used to generate a wide variety of 1,2,4-triazole derivatives in mostly high yields. This heterogeneous copper(I) catalyst
Diagnostic probes and remedies for diseases with accumulation of prion protein, and stains for prion protein
申请人:Kudo Yukitsuka
公开号:US20050260126A1
公开(公告)日:2005-11-24
A compound, which is used for the diagnosis and the prophylaxis/treatment of diseases in which prion protein is accumulated, or specific staining of abnormal prion protein in samples, represented by the formula (I) or (II):
or a salt or solvate thereof.
Facile Synthesis of 1,2,4-Triazoles via a Copper-Catalyzed Tandem Addition−Oxidative Cyclization
作者:Satoshi Ueda、Hideko Nagasawa
DOI:10.1021/ja905056z
日期:2009.10.28
A simple one-step synthesis of 1,2,4-triazole derivatives is provided by a copper-catalyzed oxidative coupling reaction under an atmosphere of air. The process should consist of sequential. N-C and N-N bond-forming copper-catalyzed oxidative coupling reactions. Starting materials and the copper catalyst are readily available and inexpensive. A wide range of functional groups are tolerated to achieve chemical diversity.