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Nitropyridines. 1. Hantzsch Synthesis of Nitropyridines and Their Quaternary Salts

โœ Scribed by G. P. Sagitullina; L. V. Glizdinskaya; G. V. Sitnikov; R. S. Sagitullin

Book ID
110415852
Publisher
Springer US
Year
2002
Tongue
English
Weight
144 KB
Volume
38
Category
Article
ISSN
0009-3122

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Nitropyridines, their synthesis and reac
Nitropyridines, their synthesis and reactions
โœ Jan M. Bakke ๐Ÿ“‚ Article ๐Ÿ“… 2005 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 208 KB

Reaction of pyridine and substituted pyridines with N 2 O 5 in an organic solvent gives the N-nitropyridinium ion. When this is reacted with SO 2 /HSO 3 -in water, 3-nitropyridine is obtained (77 % yield). With substituted pyridines the method gives good yields for 4-substituted and moderate yields