Methanol → 2-(4-Acetylphenylsulfonamido)-2-methylpropionic acid

HRID 1519107ノート

反応式

HRID 1519107 の反応式
C[O:2][C:3](=[O:20])[C:4]([NH:7][S:8]([C:11]1[CH:16]=[CH:15][C:14]([C:17](=[O:19])[CH3:18])=[CH:13][CH:12]=1)(=[O:10])=[O:9])([CH3:6])[CH3:5].C1COCC1.CO.O[Li].O>O>[C:17]([C:14]1[CH:15]=[CH:16][C:11]([S:8]([NH:7][C:4]([CH3:6])([CH3:5])[C:3]([OH:20])=[O:2])(=[O:10])=[O:9])=[CH:12][CH:13]=1)(=[O:19])[CH3:18]

参加物

6

反応物 4

HCID 887MethanolHCID 8028TetrahydrofuranHCID 168937Lithium hydroxide, monohydrateHCID 60744560Methyl-2-(4-acetylphenylsulfonamido)-2-methylpropanoate

生成物 1

HCID 210825082-(4-Acetylphenylsulfonamido)-2-methylpropionic acid収率 98%

試薬・触媒・溶媒 1

HCID 962Water溶媒

実験手順

methyl-2-(4-acetylphenylsulfonamido)-2-methylpropanoate (2.55 g, 8.52 mmol) was charged, and dissolved through addition of THF (20 ml), and methanol (20 ml). LiOH.H2O dissolved in H2O (10 ml) was added thereto, followed by stirring for 12 hours at room temperature. After stirring for 12 hours, the resultant solution was vacuum-evaporated, acidified with 2N—HCl to pH 2-3, and extracted with EA (×2). The organic layer was dried with MgSO4, and filtered. Through vacuum distillation, the solvent was removed so as to obtain 2-(4-acetylphenylsulfonamido)-2-methylpropionic acid (2.38 g, 8.35 mmol, 98%).

後処理

  1. additionwas added
  2. stirringAfter stirring for 12 hours
  3. customthe resultant solution was vacuum-evaporated
  4. extractionextracted with EA (×2)
  5. dry with materialThe organic layer was dried with MgSO4
  6. filtrationfiltered
  7. distillationThrough vacuum distillation
  8. customthe solvent was removed so as

出典と根拠

ORDレコード
ord-2e9a62c457ff4e29bbd5ffbaecb32443
出典データセット
uspto-grants-2015_07
特許番号
US09073830B2

反応ノート

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