Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Preprint, ChemRxiv called Highly functional group tolerant, (E)-selective transfer semihydrogenation of alkynes catalyzed by iridium complex bearing unsymmetrical ferrocene-based phosphine ligand, Author is Kusy, Rafal; Lindner, Marcin; Wagner, Jakub; Grela, Karol, which mentions a compound: 16004-15-2, SMILESS is IC1=CC=C(CBr)C=C1, Molecular C7H6BrI, Product Details of 16004-15-2.
Herein, authors present (E)-selective transfer semihydrogenation of alkynes based on in situ generated iridium complex from [Ir(COD)Cl]2 and unsym. ferrocene-based phosphine ligand in the presence of formic acid as a hydrogen donor. The catalytic system is distinguished by unprecedented chemoselectivity and exceptional stereoselectivity substantiated by the broad scope of tested substrates, including natural products derivatives The uniform reaction conditions may be applied to various alkynes, owing to a lack of over-reduction The intriguing difference in catalytic activity between unsym. and sym. ferrocene-based ligands was attributed to divergent coordination and steric hindrance. The presented methodol. constitutes a solution to the common limitations of the published catalytic systems.
The article 《Highly functional group tolerant, (E)-selective transfer semihydrogenation of alkynes catalyzed by iridium complex bearing unsymmetrical ferrocene-based phosphine ligand》 also mentions many details about this compound(16004-15-2)Product Details of 16004-15-2, you can pay attention to it, because details determine success or failure
Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics