Hexane → 3-(3-Ethoxy-4-methoxyphenyl)-3-(4-methylphthalimido)propanoic acid

HRID 323718

반응식

HRID 323718 반응식
[NH2:1][CH:2]([C:7]1[CH:12]=[CH:11][C:10]([O:13][CH3:14])=[C:9]([O:15][CH2:16][CH3:17])[CH:8]=1)[CH2:3][C:4]([OH:6])=[O:5].[CH3:18][C:19]1[CH:20]=[C:21]2[C:26](=O)[O:25][C:23](=[O:24])[C:22]2=[CH:28][CH:29]=1.C(OCC)(=O)C.CCCCCC>C(O)(=O)C.O>[CH2:16]([O:15][C:9]1[CH:8]=[C:7]([CH:2]([N:1]2[C:26](=[O:25])[C:21]3=[CH:20][C:19]([CH3:18])=[CH:29][CH:28]=[C:22]3[C:23]2=[O:24])[CH2:3][C:4]([OH:6])=[O:5])[CH:12]=[CH:11][C:10]=1[O:13][CH3:14])[CH3:17]

참가 물질

7

반응물 4

HCID 8058HexaneHCID 8857Ethyl AcetateHCID 880694-Methylphthalic anhydrideHCID 41021513-Amino-3-(3-ethoxy-4-methoxyphenyl)propanoic acid

생성물 1

HCID 219886643-(3-Ethoxy-4-methoxyphenyl)-3-(4-methylphthalimido)propanoic acid수율 71%

시약·촉매·용매 2

HCID 176Acetic Acid용매HCID 962Water용매

실험 절차

A stirred solution of 3-amino-3-(3-ethoxy-4-methoxyphenyl)propanoic acid (3.00 g, 12.5 mmol) and 4-methylphthalic anhydride (2.13 g, 12.5 mmol, 95%) in acetic acid was heated to reflux under nitrogen for 18 hours. The mixture was allowed to cool to room temperature. The solvent was removed in vacuo to give an oil. The resulting oil was stirred with ethyl acetate (10 mL), hexane (10 mL) and water (30 mL) for 30 minutes. The resulting suspension was filtered. The solid was washed with water (3×10 mL) and hexane (3×10 mL), and then was dried in a vacuum oven overnight (60° C., <1 torr) to give 3-(3-ethoxy-4-methoxyphenyl)-3-(4-methylphthalimido)propanoic acid as a white solid (3.4 g, 71% yield): mp, 134.0-136.0° C.; 1H NMR (DMSO-d6) δ1.31 (t, J=6.9 Hz, 3H, CH3), 2.47 (s, 3H, CH3), 3.23 (dd, J=6.7, 16.5 Hz, 1H, CHH), 3.50 (dd, J=9.2, 16.5 Hz, 1H, CHH), 3.72 (s, 3H, CH3), 3.97 (q, J=6.9 Hz, 2H, CH2), 5.58 (dd, J=6.7, 9.1 Hz, 1H, NCH), 6.90-6.95 (m, 2H, Ar), 7.01 (br s, 1H, Ar), 7.61-7.76 (m, 3H, Ar), 12.4 (br s, 1H, OH); 13C NMR (DMSO-d6) δ14.65, 21.32, 36.09, 50.04, 55.45, 63.72, 111.79, 112.15, 119.29, 123.08, 123.58, 128.51, 131.35, 131.49, 134.95, 145.63, 147.75, 148.53, 167.67, 167.78, 171.72; Anal Calcd for C21H21NO6: C, 65.79; H, 5.52; N, 3.65. Found: C, 65.46; H, 5.57; N, 3.31.

후처리

  1. temperatureto reflux under nitrogen for 18 hours
  2. customThe solvent was removed in vacuo
  3. customto give an oil
  4. filtrationThe resulting suspension was filtered
  5. washThe solid was washed with water (3×10 mL) and hexane (3×10 mL)
  6. customwas dried in a vacuum oven overnight (60° C., <1 torr)

출처 및 근거

ORD 기록
ord-c3410719256848c5845187ffa09d62a3
출처 데이터셋
uspto-grants-2001_04
특허 번호
US06214857B1

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