Sulfuric Acid → 4-Ethylbenzenesulfonic acid

HRID 1421115

反応式

HRID 1421115 の反応式
[S:1](=[O:5])(=O)([OH:3])[OH:2].[CH2:6]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)[CH3:7].C(=O)([O-])O.[Na+].[Cl-].[Na+]>O>[CH2:6]([C:8]1[CH:13]=[CH:12][C:11]([S:1]([OH:3])(=[O:5])=[O:2])=[CH:10][CH:9]=1)[CH3:7]

参加物

6

反応物 4

HCID 1118Sulfuric AcidHCID 5234Sodium ChlorideHCID 7500EthylbenzeneHCID 516892Sodium Bicarbonate

生成物 1

HCID 74024-Ethylbenzenesulfonic acid

試薬・触媒・溶媒 1

HCID 962Water溶媒

反応条件

温度
125 °C

実験手順

33 ml (0.6 mol) of conc. sulfuric acid was added to 62 ml (0.5 mol) of ethylbenzene, and the mixture was stirred for 1.5 hours under heating at 120 to 130° C. Layer separation will occur if unreacted ethylbenzene still remains, so the reaction was terminated when no layer separation was confirmed, and a solution containing p-ethylbenzenesulfonic acid as the major component was thus obtained. This solution was poured into 150 ml water and neutralized partially with sodium hydrogen carbonate, and the sodium chloride was added to precipitate crystals ol sodium p-ethylbenzene sulfonate. The resulting crystals were separated by filtration and dried in vacuo. This sodium p-ethylbenzenesulfonate is easily soluble in water and sparingly soluble in ethanol. A 1H-NMR spectrum of the resulting crystals is shown in FIG. 1.

後処理

  1. customLayer separation
  2. customwas terminated when
  3. customno layer separation
  4. additiona solution containing p-ethylbenzenesulfonic acid as the major component
  5. customwas thus obtained
  6. customto precipitate crystals ol sodium p-ethylbenzene sulfonate
  7. customThe resulting crystals were separated by filtration
  8. customdried in vacuo

出典と根拠

ORDレコード
ord-745e2c68c96e4310ab9ad71ceb67f8fa
出典データセット
uspto-grants-2000_06
特許番号
US06072083

関連ノート

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