Hydrochloric Acid → 3-Amino-6-bromopyrazine-2-carboxylic acid

HRID 78581

反応式

HRID 78581 の反応式
[NH2:1][C:2]1[C:3]([C:9]([O:11]C)=[O:10])=[N:4][C:5]([Br:8])=[CH:6][N:7]=1.[OH-].[Li+].Cl>CO.O>[NH2:1][C:2]1[C:3]([C:9]([OH:11])=[O:10])=[N:4][C:5]([Br:8])=[CH:6][N:7]=1

参加物

6

反応物 3

HCID 313Hydrochloric AcidHCID 3939Lithium HydroxideHCID 227251Methyl 3-Amino-6-bromopyrazine-2-carboxylate

生成物 1

HCID 185216003-Amino-6-bromopyrazine-2-carboxylic acid収率 99%

試薬・触媒・溶媒 2

HCID 887Methanol溶媒HCID 962Water溶媒

反応条件

温度
90 °C

実験手順

A mixture of methyl 3-amino-6-bromo-pyrazine-2-carboxylate (5.11 g, 22.02 mmol) and lithium hydroxide (2.637 g, 110.1 mmol) in MeOH (20 mL) and H2O (20 mL) was heated to 90° C. for 2 hours. The reaction mixture was allowed to cool and neutralised with HCl and the resultant precipitate collected by filtration. Taken on to the next step without further purification (4.80 g, 99% Yield).

後処理

  1. temperatureto cool
  2. filtrationthe resultant precipitate collected by filtration
  3. customTaken on to the next step without further purification (4.80 g, 99% Yield)

出典と根拠

ORDレコード
ord-b77f463d521b4c8f9bd4a22919f5bc73
出典データセット
uspto-grants-2014_09
特許番号
US08841308B2

関連ノート

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