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Enhanced dehydration and amorphization of Mg(OH)2 in the presence of ultrafine SiO2 under mechanochemical conditions

✍ Scribed by Jiefan Liao; Mamoru Senna

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
892 KB
Volume
210
Category
Article
ISSN
0040-6031

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Aromatization of 1,4-dihydropyridines in
Aromatization of 1,4-dihydropyridines in the presence of methanesulfonic acid/NaNO2/wet SiO2 under both heterogeneous and solvent free conditions
✍ Khodabakhsh Niknam; Seyed Mehdi Razavian; Mohammah Ali Zolfigol; Iraj Mohammahpo πŸ“‚ Article πŸ“… 2006 πŸ› Journal of Heterocyclic Chemistry 🌐 English βš– 90 KB

## Abstract magnified image A combination of methanesulfonic acid and sodium nitrite in the presence of wet SiO~2~ was used as an effective oxidizing agent for the oxidation of 1,4‐dihydropyridines to the corresponding pyridine derivatives under mild and heterogeneous conditions in excellent yield