3740-49-6Relevant articles and documents
Highly efficient copper-mediated atom-transfer radical addition (ATRA) in the presence of reducing agent
Eckenhoff, William T.,Garrity, Sean T.,Pintauer, Tomislav
, p. 563 - 571 (2008)
The synthesis, characterization and exceptional activity of Cu I(TPMA)Br [TPMA = tris(2-pyridylmethyl)amine] and [Cu II(TPMA)Br][Br] complexes in ATRA reactions of polybrominated compounds to alkenes in the presence of reducing agent
Phosphine Evaluation on a New Series of Heteroleptic Copper(I) Photocatalysts with dpa Ligand [Cu(dpa)(P,P)]BF4
Henriquez, Marco A.,Engl, Sebastian,Jaque, Pablo,Gonzalez, Ivan A.,Natali, Mirco,Reiser, Oliver,Cabrera, Alan R.
supporting information, p. 4020 - 4029 (2021/09/09)
Five new heteroleptic copper(I) complexes (C1-5) of the type [Cu(dpa)(P,P)]BF4 based on dipyridylamine (dpa) as N,N ligand and commercial diphosphines as P,P ancillary ligands have been synthesised through a simple methodology with high yields. All complexes were thoroughly characterised by spectroscopic and spectrometric techniques, as well by theoretical calculations. These showed Metal to Ligand Charge Transfer (MLCT) absorptions in the 300–370 nm region, and emission in the 450–520 nm region with quantum yields and lifetimes that depend on the nature of the P,P ligand. The photocatalytic performance of copper(I) complexes C1-5 was evaluated for their use as photoredox catalysts in ATRA reactions, decarboxylative coupling and an Appel-type reaction. The use of readily available dpa as N,N ligand constitutes an attractive alternative to the well-established phenanthroline ligands typically used in photocatalysis.
Making Copper Photocatalysis Even More Robust and Economic: Photoredox Catalysis with [CuII(dmp)2Cl]Cl
Engl, Sebastian,Reiser, Oliver
supporting information, p. 1523 - 1533 (2019/07/31)
The CuII complex [CuII(dmp)2Cl]Cl (dmp = 2,9-dimethyl-1,10-phenanthroline) is evaluated as an oxidation stable precursor for visible-light-mediated CuI-photoredox catalysis, being efficient and considerable more cost-effective compared to previously established copper(I) photocatalysts. Its performance and efficiency are demonstrated within a broad scope of atom transfer radical addition (ATRA) reactions, allowing the 1,2-difunctionalization of alkenes, as well as for decarboxylative coupling and an Appel reaction. Moreover, the utility of the complex is shown by various gram-scale functionalizations of styrene, thus suggesting [CuII(dmp)2Cl]Cl to be a low-priced alternative precatalyst for processes run on scale. Furthermore, this study provides UV/Vis evidence on the mechanism for the visible light activation of CuII complexes.
Design and application of diimine-based copper(i) complexes in photoredox catalysis
F?ldesi, Tamás,Sipos, Gellért,Adamik, Réka,Nagy, Bálint,Tóth, Balázs L.,Bényei, Attila,Szekeres, Krisztina J.,Láng, Gyz G.,Demeter, Attila,Peelen, Timothy J.,Novák, Zoltán
supporting information, p. 8343 - 8347 (2019/09/30)
Structurally different bis(imino)copper(i) complexes were prepared in a highly modular manner and utilized as copper-based photocatalysts in the ATRA reactions of styrenes and alkyl halides. The new photocatalysts showed good catalytic activity and ensured efficient chemical transformations.
