110294-93-4Relevant academic research and scientific papers
Facile Mechanochemical Anion Substitution in Cyclopalladated Azo-Benzenes
Bjelopetrovi?, Alen,Robi?, Marko,Halasz, Ivan,Babi?, Darko,Juriba?i? Kulcsár, Marina,?uri?, Manda
supporting information, p. 4479 - 4484 (2019/11/21)
The solvent-free ball-milling method for substitution of anionic ligands in organopalladium compounds was developed. Reactions of acetate, acetylacetonate, chloride, or tetrafluoroborate of mono- or dicyclopalladated azobenzenes with alkali salts of chloride, acetate and acetylacetonate yielded target products, some of which could not be obtained via direct C-H bond activation by Pd(II) precursors. The formation of products was monitored in situ by Raman spectroscopy and ex situ by NMR and IR spectroscopies and PXRD. The reported solid-state pathway provides easy access to organopalladium derivatives in high yields and in shorter reaction times than solvent-based protocols.
Cinnolinium salt synthesis from cyclopalladated azobenzene complexes and alkynes
Wu, Guangzhong,Rheingold, Arnold L.,Heck, Richard F.
, p. 2386 - 2391 (2008/10/08)
The reactivity of the cyclopalladated azobenzene chloro dimer is greatly enhanced when the chloro ligands are replaced by tetrafluoroborate ion. The disolvated tetrafluoroborate reacts with a variety of disubstituted alkynes under mild conditions to form 2-phenylcinnolinium tetrafluoroborates in moderate to good yields. The reaction will occur thermally with the cyclopalladated dimer, also, but only in modest yields.
