22013-33-8Relevant articles and documents
Palladated composite of Cu-BDC MOF and perlite as an efficient catalyst for hydrogenation of nitroarenes
Koohestani, Fatemeh,Sadjadi, Samahe
, (2021/11/04)
A novel composite of metal-organic framework and perlite is prepared through hydrothermal treatment of terephthalic acid and Cu(NO3)2·3H2O in the presence of perlite. The resulting composite was then utilized as a support for the immobilization of Pd nanoparticles. The obtained compound was characterized via XRD, TGA, ICP, FTIR, TEM, FE-SEM/EDS and elemental mapping analysis and applied as a catalyst for the hydrogenation of nitroarenes under mild reaction condition. The results approved that the catalyst could efficiently promote hydrogenation of various nitroarenes with different electronic densities and steric properties. Moreover, the catalyst showed high selectivity towards hydrogenation of nitro groups. Hot filtration test affirmed heterogeneous nature of catalysis. Furthermore, the present catalytic composite was highly recyclable with low Pd leaching. A comparative study also approved superior activity of the composite compared to palladated perlite and metal-organic framework.
Continuous flow hydrogenation of nitroarenes, azides and alkenes using maghemite-Pd nanocomposites
Rathi, Anuj K.,Gawande, Manoj B.,Ranc, Vaclav,Pechousek, Jiri,Petr, Martin,Cepe, Klara,Varma, Rajender S.,Zboril, Radek
, p. 152 - 160 (2015/12/31)
Maghemite-supported ultra-fine Pd (1-3 nm) nanoparticles, prepared by a simple co-precipitation method, find application in the catalytic continuous flow hydrogenation of nitroarenes, azides, and alkenes wherein they play an important role in the reduction of various functional groups on the surface of maghemite with catalyst loading (~6 wt% Pd). The salient features of the protocol include expeditious formation of reduced products in high yields under near ambient conditions with recycling of the catalyst (up to 12 cycles) without any decrease in selectivity and yield.
Direct metal-free synthesis of diarylamines from 2-nitropropane via the twofold C-H functionalization of arenes
Aksenov, Alexander V.,Aksenov, Nicolai A.,Orazova, Naila A.,Aksenov, Dmitrii A.,Dmitriev, Maksim V.,Rubin, Michael
, p. 84849 - 84855 (2015/10/28)
Synthesis of symmetric diarylamines via a twofold intermolecular electrophilic C-H functionalization of electron-rich arenes by umpolung-activated nitroalkane in polyphosphoric acid is demonstrated.