Preparation of magnetically recyclable ZnFe2O4 nanoparticles by easy single-step co-precipitation method and their catalytic performance in the synthesis of 2-aminothiophenes was written by Erfaninia, N.;Tayebee, R.;Foletto, E. L.;Amini, M. M.;Dusek, M.;Zonoz, F. M.. And the article was included in Applied Organometallic Chemistry in 2018.HPLC of Formula: 70291-62-2 This article mentions the following:
A new synthetic route for the preparation of ZnFe2O4 nanoparticles through the chem. co-precipitation using Fe2+ and Fe3+ ions in an alk. solution was developed. The synthesized nanoparticles were characterized by XRD, FTIR, SEM, ICP-MS, DRS, TGA, VSM and elemental anal. Characterization results confirmed the formation of single ZnFe2O4 phase, with an average particle size of 40 nm and a high saturation magnetization of 34 emu g-1. The prepared material was employed as a catalyst for the synthesis of 2-aminotiophene derivatives I [R1 = Ph; R2 = Me; R1 = R2 = H, Et; R1R2 = (CH2)3, (CH2)4, (CH2)5] through the Gewald reaction of ketones/aldehyde with malonodinitrile. This thermally and chem. stable nanocatalyst was environmentally benign, economical and reusable which easily recovered using an external magnet. In the experiment, the researchers used many compounds, for example, 2-Amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile (cas: 70291-62-2HPLC of Formula: 70291-62-2).
2-Amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile (cas: 70291-62-2) belongs to nitriles. Trimerization of aromatic nitriles requires harsh reaction conditions, high temperatures, long reaction times, and pressure. Nitrile groups in organic compounds can undergo a variety of reactions depending on the reactants or conditions. A nitrile group can be hydrolyzed, reduced, or ejected from a molecule as a cyanide ion.HPLC of Formula: 70291-62-2
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts