Acetic Anhydride → HCID 70601480、化合物

HRID 236889ノート

反応式

HRID 236889 の反応式
[CH3:1][S:2]([CH2:4][C:5]1[O:6][C:7]2[CH:15]=[CH:14][CH:13]=[CH:12][C:8]=2[C:9](=[O:11])[CH:10]=1)=O.[C:16]([O:19]C(=O)C)(=[O:18])[CH3:17]>>[C:16]([OH:19])(=[O:18])[CH3:17].[CH3:1][S:2][CH:4]([OH:18])[C:5]1[O:6][C:7]2[CH:15]=[CH:14][CH:13]=[CH:12][C:8]=2[C:9](=[O:11])[CH:10]=1

参加物

3

反応物 2

HCID 7918Acetic AnhydrideHCID 124017022-[(Methylsulfinyl)methyl]-4H-1-benzopyran-4-one

生成物 1

HCID 70601480HCID 70601480、化合物収率 90%

実験手順

A solution of 2-[(methylsulfinyl)methyl]-4H-1-benzopyran-4-one (2.22 g, 0.01 m) in acetic anhydride (15 ml) was refluxed under nitrogen for 5 hours. The solvent was removed under reduced pressure to give a brown gum, which crystallized on standing. Recrystallization from methanol gave off-white crystals (2.36 g, 90%), m.p. 123°-125°.

後処理

  1. customThe solvent was removed under reduced pressure
  2. customto give a brown gum, which
  3. customcrystallized
  4. customRecrystallization from methanol

出典と根拠

ORDレコード
ord-49a3a46da06f4f0cb7b71bff03846d13
出典データセット
uspto-grants-1979_06
特許番号
US04158663

反応ノート

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