Acetic Anhydride →

HRID 620756ノート

反応式

HRID 620756 の反応式
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([CH2:13][C:14]([O:16][CH3:17])=[O:15])[CH:6]=[C:7]([O:11][CH3:12])[C:8]=1[O:9][CH3:10].[C:18](OC(=O)C)(=O)[CH3:19].[Cl:25]([OH:29])(=[O:28])(=[O:27])=[O:26]>>[Cl:25]([O-:29])(=[O:28])(=[O:27])=[O:26].[CH3:17][O:16][C:14]1[O:15][CH2+:18]([CH3:19])[C:6]2[C:7]([O:11][CH3:12])=[C:8]([O:9][CH3:10])[C:3]([O:2][CH3:1])=[CH:4][C:5]=2[CH:13]=1

参加物

3

反応物 3

HCID 7918Acetic AnhydrideHCID 24247Perchloric AcidHCID 11107458Methyl 2-(3,4,5-trimethoxyphenyl)acetate

生成物 0

生成物のデータはまだありません。

実験手順

To a stirred and cooled (ice-bath) solution of 24.8 grams methyl 3,4,5-trimethoxyphenyl-acetate (0.103 mol) in 51.8 grams acetic anhydride (0.508 mol) was slowly added 70% perchloric acid (14 ml, 0.163 mol) over a 20 minute period. The cooling bath was removed, and the mixture was stirred at room temperature for 2 hours. The reaction mixture was cooled again in an ice-bath and 600 ml diethyl ether was added with stirring. The orange crystalline perchlorate salt that precipitated was isolated by filtration, washed with diethyl ether and dried to provide 25.3 grams of Compound 8c (67.2% yield) having a melting point of 160°-162° C. (with decomposition).

後処理

  1. customover a 20 minute
  2. customThe cooling bath was removed
  3. stirringthe mixture was stirred at room temperature for 2 hours
  4. temperatureThe reaction mixture was cooled again in an ice-bath
  5. addition600 ml diethyl ether was added
  6. stirringwith stirring
  7. customThe orange crystalline perchlorate salt that precipitated
  8. customwas isolated by filtration
  9. washwashed with diethyl ether
  10. customdried

出典と根拠

ORDレコード
ord-00a8f37030eb45edb2e6c86dea67c88d
出典データセット
uspto-grants-1989_04
特許番号
US04822800

反応ノート

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