1359859-53-2Relevant academic research and scientific papers
Enantioselective rhodium/ruthenium photoredox catalysis: en route to chiral 1,2-aminoalcohols
Ma, Jiajia,Harms, Klaus,Meggers, Eric
supporting information, p. 10183 - 10186 (2016/08/18)
A rhodium-based chiral Lewis acid catalyst combined with [Ru(bpy)3](PF6)2 as a photoredox sensitizer allows for the visible-light-activated redox coupling of α-silylamines with 2-acyl imidazoles to afford, after desilylation, 1,2-amino-alcohols in yields of 69-88% and with high enantioselectivity (54-99% ee). The reaction is proposed to proceed via an electron exchange between the α-silylamine (electron donor) and the rhodium-chelated 2-acyl imidazole (electron acceptor), followed by a stereocontrolled radical-radical reaction. Substrate scope and control experiments reveal that the trimethylsilyl group plays a crucial role in this reductive umpolung of the carbonyl group.
Visible-light-mediated utilization of α-aminoalkyl radicals: Addition to electron-deficient alkenes using photoredox catalysts
Miyake, Yoshihiro,Nakajima, Kazunari,Nishibayashi, Yoshiaki
supporting information; experimental part, p. 3338 - 3341 (2012/04/10)
Synthetic use of α-aminoalkyl radicals formed by single electron oxidation of amines is quite limited. Here we demonstrate addition of α-aminoalkyl radicals to electron-deficient alkenes by visible-light-mediated electron transfer using transition metal polypyridyl complexes as photocatalysts, via a sequential redox pathway.
