2-Methoxy-3-amino-5-ethyl-6-methylpyridine → 2-Methoxy-3-hydroxy-5-ethyl-6-methylpyridine

HRID 1033007ノート

反応式

HRID 1033007 の反応式
[CH3:1][O:2][C:3]1[C:8](N)=[CH:7][C:6]([CH2:10][CH3:11])=[C:5]([CH3:12])[N:4]=1.N([O-])=[O:14].[Na+]>S(=O)(=O)(O)O.O>[CH3:1][O:2][C:3]1[C:8]([OH:14])=[CH:7][C:6]([CH2:10][CH3:11])=[C:5]([CH3:12])[N:4]=1

参加物

5

反応物 2

HCID 103747942-Methoxy-3-amino-5-ethyl-6-methylpyridineHCID 23668193Sodium Nitrite

生成物 1

HCID 118194042-Methoxy-3-hydroxy-5-ethyl-6-methylpyridine収率 43.9%

試薬・触媒・溶媒 2

HCID 962Water溶媒HCID 1118Sulfuric Acid溶媒2 回

反応条件

温度
110 °C

実験手順

A batch of 2-methoxy-3-amino-5-ethyl-6-methylpyridine (171 mg, 1.05 mmol) was dissolved in 5% aqueous sulfuric acid (4 mL), cooled in an ice bath, then a solution of sodium nitrite (78 mg, 1.13 mmol) in water (1 mL) was added dropwise. After 0.5 hour, the resulting mixture was added dropwise to 5% aqueous sulfuric acid (6 mL) warmed at 110° C. The solution was stirred for 0.5 hour, cooled and the product extracted into chloroform, then dried (Na2SO4), filtered and evaporated to yield 77 mg (43%) of product.

後処理

  1. temperaturecooled in an ice bath
  2. temperaturecooled
  3. extractionthe product extracted into chloroform
  4. dry with materialdried (Na2SO4)
  5. filtrationfiltered
  6. customevaporated

出典と根拠

ORDレコード
ord-060a759a8a0c431abe55c2510f01cc0f
出典データセット
uspto-grants-1994_05
特許番号
US05308854

反応ノート

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