Easy single-step preparation of ZnO nanoparticles by sedimentation method and studying their catalytic performance in the synthesis of 2-aminothiophenes via Gewald reaction was written by Tayebee, Reza;Javadi, Farzad;Argi, Gholamreza. And the article was included in Journal of Molecular Catalysis A: Chemical in 2013.Product Details of 70291-62-2 This article mentions the following:
Zinc oxide is a multi-purpose active material with important catalytic applications. Nano-sized ZnO particles were easily synthesized through sedimentation of zinc acetate di-hydrate in absolute ethanol and were characterized by XRD and SEM. The XRD results indicated pure wurtzite structure with the average particle size of 26.9 nm for the nano-particles. Size of ZnO nano-particles was decreased while solution concentration was increased. This observation would be explained considering enhancing nucleation processes of nano-particles at high concentration of zinc acetate. The prepared nano-particles (2.5 mol%) were used as catalyst for the fast and efficient synthesis of 2-aminothiophenes under solvent free conditions. The three-component mixture of a carbonyl compound, malonodinitrile, and elemental sulfur was converted into the corresponding 2-aminothiophene in moderate to high yields with excellent selectivity. In the experiment, the researchers used many compounds, for example, 2-Amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile (cas: 70291-62-2Product Details of 70291-62-2).
2-Amino-5,6-dihydro-4H-cyclopenta[b]thiophene-3-carbonitrile (cas: 70291-62-2) belongs to nitriles. Nitrile carbon shifts are in the range of 115–125 ppm whereas in isonitriles the shifts are around 155–165 ppm. Asymmetric bioreduction of nitriles is an attractive route to produce optically active nitriles as current metal-catalyzed hydrogenations tend to have low reactivity.Product Details of 70291-62-2
Referemce:
Nitrile – Wikipedia,
Nitriles – Chemistry LibreTexts