Acetic Anhydride → 2-Acetoxy-2-(2-fluoro-4-biphenylyl)propionic acid

HRID 1449051ノート

反応式

HRID 1449051 の反応式
[F:1][C:2]1[CH:7]=[C:6]([C:8]([OH:13])([CH3:12])[C:9]([OH:11])=[O:10])[CH:5]=[CH:4][C:3]=1[C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][CH:15]=1.[C:20](OC(=O)C)(=[O:22])[CH3:21]>O>[C:20]([O:13][C:8]([C:6]1[CH:5]=[CH:4][C:3]([C:14]2[CH:15]=[CH:16][CH:17]=[CH:18][CH:19]=2)=[C:2]([F:1])[CH:7]=1)([CH3:12])[C:9]([OH:11])=[O:10])(=[O:22])[CH3:21]

参加物

4

反応物 2

HCID 7918Acetic AnhydrideHCID 233109062-(2-Fluorobiphenyl-4-yl)-2-hydroxypropanoic acid

生成物 1

HCID 205597762-Acetoxy-2-(2-fluoro-4-biphenylyl)propionic acid

試薬・触媒・溶媒 1

HCID 962Water溶媒

実験手順

(+)-2-(2-Fluoro-4-biphenylyl)-2-hydroxypropionic acid (1 g.) from Example 42 was added to acetic anhydride (10 g.) and the mixture stirred overnight at room temperature. The mixture was added to water (40 ml.) and allowed to stand for two hours. The product was collected and recrystallised from a mixture of ether and light petroleum (b.p. 62°-68° C.) to give (-)-2-acetoxy-2-(2-fluoro-4-biphenylyl)propionic acid, m.p. 125°-127° C. and [α]D20 -33.0°.

後処理

  1. waitto stand for two hours
  2. customThe product was collected
  3. customrecrystallised from a mixture of ether and light petroleum (b.p. 62°-68° C.)

出典と根拠

ORDレコード
ord-a790a65ef6a14c048da6600c38a92f0b
出典データセット
uspto-grants-1980_02
特許番号
US04188491

反応ノート

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