Terephthalic Acid → Choline

HRID 436720

反応式

HRID 436720 の反応式
[C:1]([OH:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1.[OH-].[OH:14][CH2:15][CH2:16][N+:17]([CH3:20])([CH3:19])[CH3:18]>CO>[OH:14][CH2:15][CH2:16][N+:17]([CH3:20])([CH3:19])[CH3:18].[C:1]([OH:12])(=[O:11])[C:2]1[CH:10]=[CH:9][C:5]([C:6]([OH:8])=[O:7])=[CH:4][CH:3]=1

参加物

5

反応物 2

HCID 7489Terephthalic Acid3 回HCID 31255Choline, hydroxide

生成物 2

HCID 305CholineHCID 7489Terephthalic Acid

試薬・触媒・溶媒 1

HCID 887Methanol溶媒2 回

実験手順

Terephthalic acid (16 parts) is slurried in methanol (80 parts) at 0° C. A 45% solution of 2-hydroxyethyltrimethylammonium hydroxide (choline base) in methanol (10 parts) is added to the slurried terephthalic acid. After stirring for 30 minutes the excess terephthalic acid is removed by filtration. The filtrate is concentrated under reduced pressure and cooled, giving the mono-2-hydroxyethyltrimethylammonium salt of terephthalic acid as a precipitate which is isolated by filtration. That the product is the mono-salt is shown by the following elemental analysis:

後処理

  1. customis removed by filtration
  2. concentrationThe filtrate is concentrated under reduced pressure
  3. temperaturecooled

出典と根拠

ORDレコード
ord-36ef37dbef9f45058c8d0cddab49b5af
出典データセット
uspto-grants-1977_06
特許番号
US04028307

関連ノート

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