Malonic Acid → 3-Amino-3-(4-fluorophenyl)propanoic acid

HRID 381535ノート

反応式

HRID 381535 の反応式
[F:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]=O)=[CH:4][CH:3]=1.[C:10]([O-:13])(=[O:12])[CH3:11].[NH4+:14].C(O)(=O)CC(O)=O>C(O)C>[F:1][C:2]1[CH:9]=[CH:8][C:5]([CH:6]([CH2:11][C:10]([OH:13])=[O:12])[NH2:14])=[CH:4][CH:3]=1

参加物

5

反応物 3

HCID 867Malonic AcidHCID 680234-FluorobenzaldehydeHCID 517165Ammonium Acetate

生成物 1

HCID 5798853-Amino-3-(4-fluorophenyl)propanoic acid収率 68.5%

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒

実験手順

4-Fluorobenzaldehyde (10 g, 80 mmol), ammonium acetate (8.2487 g, 107 mmol) and malonic acid (8.3285 g, 80 mmol) were refluxed (slow) in absolute ethanol (60 mL) for 48 hours. White solid was filtered and purified by ethanol recrystallization to afford β-4-fluorophenyl-β-alanine (10.04 g, 54.8 mmol, 68.5%); MP: 216-217° C.; IR (KBr): 3160, 1606 cm−1; TLC: RF=0.41 (solvent 24), 0.42 (solvent 25); 1H NMR (D2O/K2CO3): δ 7.28-7.19 (m, 2H), 7.03-6.91 (m, 2H), 4.10 (t, J=7.39 Hz, 1H), 2.54-2.34 (m, 2H). Anal. Calcd for C9H10FNO2.5/3H2O: C, 50.70; H, 6.30; N, 6.57. Found: C, 50.34; H, 6.39; N, 6.30.

後処理

  1. filtrationWhite solid was filtered
  2. custompurified by ethanol recrystallization

出典と根拠

ORDレコード
ord-1841e024edb24f0fb23cc6877204a150
出典データセット
uspto-grants-2001_10
特許番号
US06306909B1

反応ノート

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