4-ニトロピリヂンの分解反応について
1952 年 72 巻 8 号 p. 1051-1054
詳細
1952 年 72 巻 8 号 p. 1051-1054
1) Reaction of 4-nitropyridine N-oxide with phosphorus trichloride in chloroform results in the formation of N-(4′-pyridyl)-4-pyridone by the secondary reaction of 4-nitropyridine and phosphoryl chloride formed by the first reaction.
2) 4-Nitropyridine undergoes similar decomposition when allowed to stand with thionyl, sulfuryl or acetyl chloride, or warmed with these reagents in chloroform.
3) 4-Nitropyridine undergoes similar decomposition to N-(4′-pyridyl)-4-pyridone by a long standing by itself.
4) Heating this N-(4′-pyridyl)-4-pyridone with phosphoryl chloride in a sealed tube to 120-130° results in the formation of approximately two moles of 4-chloropyridine.
