p-Toluenesulfonic acid → HCID 21506067、化合物

HRID 918667

反応式

HRID 918667 の反応式
[NH2:1][C:2]1[CH:3]=[C:4]([CH:8]=[C:9]([S:18](=[O:21])(=[O:20])[NH2:19])[C:10]=1[O:11][C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)[C:5]([OH:7])=[O:6].[CH:22]1[C:27]([CH:28]=O)=[CH:26][C:25]2[O:30][CH2:31][O:32][C:24]=2[CH:23]=1.C1(C)C=CC(S(O)(=O)=O)=CC=1.[H][H]>C(O)(=O)C.[Pt]=O>[CH2:31]1[O:32][C:24]2[CH:23]=[CH:22][C:27]([CH2:28][NH:1][C:2]3[CH:3]=[C:4]([CH:8]=[C:9]([S:18](=[O:21])(=[O:20])[NH2:19])[C:10]=3[O:11][C:12]3[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=3)[C:5]([OH:7])=[O:6])=[CH:26][C:25]=2[O:30]1

参加物

7

反応物 4

HCID 6101p-Toluenesulfonic acidHCID 8438PiperonalHCID 1199273-Amino-4-phenoxy-5-sulfamoylbenzoic acidHCID 178418361HCID 178418361、化合物2 回

生成物 1

HCID 21506067HCID 21506067、化合物

試薬・触媒・溶媒 2

HCID 82844Platinum oxide (PtO)触媒HCID 176Acetic Acid溶媒

実験手順

To a suspension of 3-amino-4-phenoxy-5-sulphamyl-benzoic acid (1.54 g) in acetic acid (30 ml), piperonal (0.75 g) was added. After the addition of platinum oxide (25 mg) and a catalytic amount of p-toluenesulphonic acid, the reaction mixture was hydrogenated at room temperature and 1.1 atmospheres hydrogen pressure until the hydrogen uptake had become negligible. Then the reaction mixture was filtered by suction. The filter cake was suspended in water (100 ml), and the pH was adjusted to 8.5 by addition of lithium hydroxide. After the catalyst had been removed from the resulting solution, the 3-(3,4-methylenedioxybenzylamino)-4-phenoxy-5-sulphamyl-benzoic acid was precipitated from the filtrate by addition of 4N hydrochloric acid until the pH was 3. After recrystallization from methanol, the melting point was 229°-230°C.

後処理

  1. additionwas added
  2. customwas hydrogenated at room temperature
  3. filtrationThen the reaction mixture was filtered by suction
  4. additionthe pH was adjusted to 8.5 by addition of lithium hydroxide
  5. customAfter the catalyst had been removed from the resulting solution
  6. customthe 3-(3,4-methylenedioxybenzylamino)-4-phenoxy-5-sulphamyl-benzoic acid was precipitated from the filtrate by addition of 4N hydrochloric acid until the pH was 3
  7. customAfter recrystallization from methanol

出典と根拠

ORDレコード
ord-838e789611c743989ca0ae934ebf6d6b
出典データセット
uspto-grants-1976_07
特許番号
US03971819

関連ノート

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