《Fully oxygen-tolerant atom transfer radical polymerization triggered by sodium pyruvate》 was written by Szczepaniak, Grzegorz; Lagodzinska, Matylda; Dadashi-Silab, Sajjad; Gorczynski, Adam; Matyjaszewski, Krzysztof. SDS of cas: 7789-45-9 And the article was included in Chemical Science in 2020. The article conveys some information:
ATRP (atom transfer radical polymerization) is one of the most robust reversible deactivation radical polymerization (RDRP) systems. However, the limited oxygen tolerance of conventional ATRP impedes its practical use in an ambient atm. In this work, we developed a fully oxygen-tolerant PICAR (photoinduced initiators for continuous activator regeneration) ATRP process occurring in both water and organic solvents in an open reaction vessel. Continuous regeneration of the oxidized form of the copper catalyst with sodium pyruvate through UV excitation allowed the chem. removal of oxygen from the reaction mixture while maintaining a well-controlled polymerization of N-isopropylacrylamide (NIPAM) or Me acrylate (MA) monomers. The polymerizations of NIPAM were conducted with 250 ppm (with respect to the monomer) or lower concentrations of CuBr2 and a tris[2-(dimethylamino)ethyl]amine ligand. The polymers were synthesized to nearly quant. monomer conversions (>99%), high mol. weights (Mn > 270 000), and low dispersities (1.16 < D < 1.44) in less than 30 min under biol. relevant conditions. The reported method provided a well-controlled ATRP (D = 1.16) of MA in DMSO despite oxygen diffusion from the atm. into the reaction system. The experimental part of the paper was very detailed, including the reaction process of Cupric bromide(cas: 7789-45-9SDS of cas: 7789-45-9)
Some reported applications of Cupric bromide(cas: 7789-45-9) are: catalyst in cross coupling reactions; co-catalyst in Sonogashira coupling; lewis acid in enantioselective addition of alkynes.SDS of cas: 7789-45-9
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”