Hydrochloric Acid → 3-(6-Methoxy-alpha-methyl-2-naphthalenacetyl) thiazolidin-4-carboxylic acid

HRID 749220

반응식

HRID 749220 반응식
[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[CH:9]=[C:8]([CH:13]([CH3:17])[C:14]([OH:16])=O)[CH:7]=[CH:6]2.C(Cl)(=O)C(Cl)=O.[S:24]1[CH2:28][CH:27]([C:29]([OH:31])=[O:30])[NH:26][CH2:25]1.C(N(CC)CC)C.Cl>C1(C)C=CC=CC=1.CN(C)C=O.CC(C)=O>[CH3:1][O:2][C:3]1[CH:4]=[C:5]2[C:10](=[CH:11][CH:12]=1)[CH:9]=[C:8]([CH:13]([CH3:17])[C:14]([N:26]1[CH:27]([C:29]([OH:31])=[O:30])[CH2:28][S:24][CH2:25]1)=[O:16])[CH:7]=[CH:6]2

참가 물질

9

반응 조건

온도
0 °C

실험 절차

To a solution of 6-methoxy-α-methyl-2-naphthalenacetic acid (4.02 g, 17.5 mmoles) in toluene (30 ml) and N,N-dimethylformamide (0.3 ml) cooled at 0° C., oxalylchloride (2.92 ml, 34.06 mmoles) is added. After 2 hours at room temperature, the solution is evaporated at reduced pressure. The obtained residue is dissolved in acetone (50 ml) and the solution is added to a solution of 4-thiazolidincarboxylic acid (2.33 g, 17.5 mmoles) and triethylamine (6.34 ml, 45.5 mmoles) in acetone (50 ml) cooled at 0° C. After 2 hours the solution is acidified with HCl 4 N, concentrated under vacuum, the residue is treated with ethyl acetate and the organic phase is washed first with HCl 2 N, then with water. The organic phase is anhydrified with sodium sulphate and evaporated at reduced pressure. 4.43 g of the expected product are obtained in the form of a white solid having m.p. 165° C.-168° C.

후처리

  1. customthe solution is evaporated at reduced pressure
  2. dissolutionThe obtained residue is dissolved in acetone (50 ml)
  3. concentrationconcentrated under vacuum
  4. additionthe residue is treated with ethyl acetate
  5. washthe organic phase is washed first with HCl 2 N
  6. customevaporated at reduced pressure

출처 및 근거

ORD 기록
ord-5051bfc70c824566a78e478f7ef812aa
출처 데이터셋
uspto-grants-2008_07
특허 번호
US07402600B2

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