7510-33-0Relevant articles and documents
α-Diimine synthesis via titanium-mediated multicomponent diimination of alkynes with C-nitrosos
Cheng, Yukun,Egger, Dominic T.,Frye, Connor W.,Kounalis, Errikos,Pearce, Adam J.,Tonks, Ian A.
, p. 1469 - 1477 (2022/02/11)
α-Diimines are commonly used as supporting ligands for a variety of transition metal-catalyzed processes, most notably in α-olefin polymerization. They are also precursors to valuable synthetic targets, such as chiral 1,2-diamines. Their synthesis is usually performed through acid-catalyzed condensation of amines with α-diketones. Despite the simplicity of this approach, accessing unsymmetrical α-diimines is challenging. Herein, we report the Ti-mediated intermolecular diimination of alkynes to afford a variety of symmetrical and unsymmetrical α-diimines through the reaction of diazatitanacyclohexadiene intermediates with C-nitrosos. These diazatitanacycles can be readily accessed in situ via the multicomponent coupling of TiNR imidos with alkynes and nitriles. The formation of α-diimines is achieved through formal [4 + 2]-cycloaddition of the C-nitroso to the Ti and γ-carbon of the diazatitanacyclohexadiene followed by two subsequent cycloreversion steps to eliminate nitrile and afford the α-diimine and a Ti oxo.
A Highly Stereoselective Metal-Free Hydrogenation of Diimines for the Synthesis of Cis -Vicinal Diamines
Zhu, Xiaxia,Du, Haifeng
supporting information, p. 3106 - 3109 (2015/06/30)
A highly stereoselective metal-free hydrogenation of vicinal diimines has been successfully realized for the first time using 5-10 mol % of Piers borane as a catalyst under mild conditions, and a variety of cis-1,2-diamines were obtained in 92-99% yields.
Antibacterial and DNA interaction studies of zinc(II) complexes with quinolone family member, ciprofloxacin
Patel, Mohan,Chhasatia, Mehul,Parmar, Pradhuman
experimental part, p. 439 - 446 (2010/04/02)
DNA binding and cleavage characteristics of Zn(II) complexes have been investigated. The DNA interaction property of the complexes has been investigated using absorption spectra, viscosity measurements, as well as gel electrophoresis studies. Intrinsic bi