Hydrochloric Acid → (17beta)-3-Oxoandrost-4-ene-17-carboxylic acid

HRID 1165507

反応式

HRID 1165507 の反応式
[CH3:1][C@:2]12[CH2:19][CH2:18][C@H:17]3[C@@H:7]([CH2:8][CH2:9][C:10]4[C@:15]3([CH3:16])[CH2:14][CH2:13][C:12](=[O:20])[CH:11]=4)[C@@H:6]1[CH2:5][CH2:4][C@@H:3]2[C:21]([O:23]C)=[O:22].O.[OH-].[K+].Cl>CO>[CH3:1][C@:2]12[CH2:19][CH2:18][C@H:17]3[C@@H:7]([CH2:8][CH2:9][C:10]4[C@:15]3([CH3:16])[CH2:14][CH2:13][C:12](=[O:20])[CH:11]=4)[C@@H:6]1[CH2:5][CH2:4][C@@H:3]2[C:21]([OH:23])=[O:22]

参加物

6

反応物 4

HCID 313Hydrochloric AcidHCID 962Water2 回HCID 14797Potassium HydroxideHCID 165014Methyl (17beta)-3-oxoandrost-4-ene-17-carboxylate

生成物 1

HCID 99472(17beta)-3-Oxoandrost-4-ene-17-carboxylic acid収率 94.8%

試薬・触媒・溶媒 1

HCID 887Methanol溶媒

実験手順

Methyl androst-4-ene-3-one-17β-carboxylate (20 g, 60 mmol) was dissolved in 700 ml of a 20:1 solution of methanol:water and potassium hydroxide (7 g) was added and the solution was refluxed under argon for 24 hours. The reaction mixture was then acidified with 5% hydrochloric acid and 250 ml water was added. After aging for 1 hour, the mixture was filtered and dried to yield 18 g (94%) of androst-4-ene-3-one-17β-carboxylic acid as a white crystalline solid.

後処理

  1. temperaturethe solution was refluxed under argon for 24 hours
  2. additionwas added
  3. filtrationthe mixture was filtered
  4. customdried

出典と根拠

ORDレコード
ord-0daa8b0b595e4355819b2370d90cb463
出典データセット
uspto-grants-1990_03
特許番号
US04910226

関連ノート

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