《A tripodal heptadentate Schiff base as an active ligand for atom transfer radical polymerization》 was written by Xu, Xiaoling; Bao, Chunyang; Hong, Mei; Li, Die; Zhang, Qiang. Reference of Cupric bromideThis research focused ontrispyridylmethyl iminoethylamine Schiff base catalyst methyl methacrylate polymerization. The article conveys some information:
The use of a tripodal heptadentate Schiff base, tris[N-(2-pyridylmethyl)-2-iminoethyl]amine (Py3Tren), as an active ligand for atom transfer radical polymerization (ATRP) is reported. The coordination between Py3Tren and CuBr2 in solution is investigated by electrospray ionization mass spectrometry, which reveals the generation of a tripod claw-shaped complex by using equimolar quantities of CuBr2 and Py3Tren. Electrochem. studies of CuBr2/Py3Tren complexes demonstrate more neg. redox potentials and higher activities compared with those of bidentate CuBr2/N-ethyl-2-pyridylmethanimine (PyEthyl) complexes. Subsequently, CuBr/Py3Tren is employed as a catalyst for the normal ATRP of Me methacrylate (MMA). Well-defined poly(MMA) with controlled mol. weight and narrow polydispersity could be synthesized with high conversions and fast rates even at ambient temperature (30°C). Activators regenerated by electron transfer (ARGET) ATRP and supplemental activators and reducing agents (SARA) ATRP of acrylate monomers using Py3Tren as the ligand are also performed to reduce the amounts of metal catalysts for polymerizations The results came from multiple reactions, including the reaction of Cupric bromide(cas: 7789-45-9Reference of Cupric bromide)
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.Reference of Cupric bromide
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”