Sulfuric Acid → Purpurin anthraquinone

HRID 400327

反応式

HRID 400327 の反応式
S(=O)(=O)(O)[OH:2].[CH:6]1[CH:11]=[C:10]2[C:12]([C:14]3[CH:21]=[CH:20][C:19]([OH:22])=[C:18]([OH:23])[C:15]=3[C:16](=[O:17])[C:9]2=[CH:8][CH:7]=1)=[O:13]>[O-2].[O-2].[Mn+4].O>[CH:6]1[CH:7]=[CH:8][C:9]2[C:16](=[O:17])[C:15]3[C:18]([OH:23])=[C:19]([OH:22])[CH:20]=[C:21]([OH:2])[C:14]=3[C:12](=[O:13])[C:10]=2[CH:11]=1

参加物

5

反応物 2

HCID 1118Sulfuric Acid2 回HCID 6293Alizarin

生成物 1

HCID 6683Purpurin anthraquinone

試薬・触媒・溶媒 2

HCID 178418406HCID 178418406、化合物触媒HCID 962Water溶媒2 回

反応条件

温度
10 °C

実験手順

A suspension of 17.5 g of manganese dioxide/40 g of concentrated sulfuric acid, that had been prepared by putting 9.0 g of water and 130 g of 96% sulfuric acid into 30 g of alizarin (manufactured by Sigma-Aldrich Corporation), followed by ice-cooling, was added over 1 hour to a reaction liquid while maintaining it at 10° C. or lower. After 2 hours, the reaction liquid was poured into 1 L of water, with the inside of the container being washed with 400 mL of water, and filtered. The crystal collected by filtration was washed with 300 mL of methanol and dried to obtain 32.4 g of purpurin.

後処理

  1. customhad been prepared
  2. temperaturecooling
  3. additionwas added over 1 hour to a reaction liquid
  4. customthe reaction liquid
  5. washbeing washed with 400 mL of water
  6. filtrationfiltered
  7. filtrationThe crystal collected by filtration
  8. washwas washed with 300 mL of methanol
  9. customdried

出典と根拠

ORDレコード
ord-3f0738e119114fdcbc6b23a076db3b5d
出典データセット
uspto-grants-2014_06
特許番号
US08741513B2

関連ノート

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