Hydrochloric Acid → 4-(4-Oxo-4-phenyl-butyryl)-benzoic acid

HRID 1725158

反応式

HRID 1725158 の反応式
C([O:3][C:4](=[O:23])[C:5]1[CH:10]=[CH:9][C:8]([C:11](=[O:22])[CH2:12][CH2:13][C:14](=[O:21])[C:15]2[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=2)=[CH:7][CH:6]=1)C.[OH-].[K+].Cl>C1COCC1>[O:21]=[C:14]([C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1)[CH2:13][CH2:12][C:11]([C:8]1[CH:9]=[CH:10][C:5]([C:4]([OH:23])=[O:3])=[CH:6][CH:7]=1)=[O:22]

参加物

5

反応物 3

HCID 313Hydrochloric AcidHCID 14797Potassium HydroxideHCID 44520324-(4-Oxo-4-phenyl-butyryl)-benzoic acid ethyl ester

生成物 1

HCID 574236664-(4-Oxo-4-phenyl-butyryl)-benzoic acid収率 99.8%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

反応条件

温度
65 °C

実験手順

4-(4-Oxo-4-phenyl-butyryl)-benzoic acid ethyl ester (3.22 g, 10.4 mmol) is dissolved in THF (100 mL) and an aqueous solution of KOH (15.6 mmol in 50 mL) is added. The reaction is stirred and heated (65° C.) for 6 h, whereupon HPLC analysis indicated the formation of a single product at the expense of the diketone. The reaction is neutralized with aqueous HCl and the THF removed in vacuo. The resulting solid is dissolved in EtOAc and the organic phase dried (Na2SO4), filtered and concentrated to afford 2.93 g (>99%) of the desired carboxylic acid (RT=0.90). LCMS confirmed the identity of the product (ES+Exact Mass: 282.09, Obs.: 283.48). This product is used without further purification.

後処理

  1. customthe THF removed in vacuo
  2. dissolutionThe resulting solid is dissolved in EtOAc
  3. dry with materialthe organic phase dried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-1e6484ba8d164384850040eca40f606d
出典データセット
uspto-grants-2009_02
特許番号
US07488832B2

関連ノート

読み込み中…