Silicon-Enriched Nickel Nanoparticles for Hydrogenation of N-Heterocycles in Aqueous Media was written by Mao, Shuxin;Ryabchuk, Pavel;Dastgir, Sarim;Anwar, Muhammad;Junge, Kathrin;Beller, Matthias. And the article was included in ACS Applied Nano Materials in 2022.Application of 644-98-4 This article mentions the following:
Reported a heterogeneous intermetallic nickel silicide catalyst prepared by impregnation of nickel acetate/1,10-phenanthroline on fumed silica and subsequent pyrolysis. The optimal catalyst exhibited good activity and selectivity for hydrogenation of N-heterocycles including pyridines and quinolines under comparably mild conditions using water as solvent. It was the first reported efficient nickel based heterogeneous catalyst for catalytic pyridine hydrogenation. In the experiment, the researchers used many compounds, for example, 2-Isopropylpyridine (cas: 644-98-4Application of 644-98-4).
2-Isopropylpyridine (cas: 644-98-4) belongs to pyridine derivatives. Pyridine has a dipole moment and a weaker resonant stabilization than benzene (resonance energy 117 kJ·mol−1 in pyridine vs. 150 kJ·mol−1 in benzene). Several pyridine derivatives play important roles in biological systems. While its biosynthesis is not fully understood, nicotinic acid (vitamin B3) occurs in some bacteria, fungi, and mammals.Application of 644-98-4