Acetic Acid → 8-Ethyl-7,8-dihydro-5-hydroxy-7-oxo-2-phenylpyrido[2,3-d]pyrimidine-6-carboxylic acid ethyl ester

HRID 127368

반응식

HRID 127368 반응식
C(O[C:4]([C:6]1[C:7]([NH:18][CH2:19][CH3:20])=[N:8][C:9]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)=[N:10][CH:11]=1)=[O:5])C.C([CH:23]([C:27](Cl)=[O:28])[C:24](Cl)=[O:25])C.[Na].[C:31](O)(=[O:33])[CH3:32]>C(OCC)C.C(O)C.O>[CH2:31]([O:33][C:27]([C:23]1[C:24](=[O:25])[N:18]([CH2:19][CH3:20])[C:7]2[N:8]=[C:9]([C:12]3[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=3)[N:10]=[CH:11][C:6]=2[C:4]=1[OH:5])=[O:28])[CH3:32]

참가 물질

8

실험 절차

To 9.2 g. (0.034 mole) of 4-ethylamino-2-phenyl-5-pyrimidine-carboxylic acid ethyl ester in diethyl ether was added to 2.6 g. (0.017 mole) of ethyl malonyl chloride and then stirred 3 hours at room temperature. The reaction was then filtered and the filtrate stripped to dryness. This residue was dissolved in ethanol and added to a solution of 0.78 g. of sodium (0.034 mole) in ethanol and stirred at room temperature for 10 minutes. Acidification with acetic acid followed by the slow addition of water resulted in the formation of a precipitate. The crude product was removed by filtration and recrystallized from hexane m.p. 175°-177° C.--to give 1.0 g. of the title product.

후처리

  1. filtrationThe reaction was then filtered
  2. dissolutionThis residue was dissolved in ethanol
  3. additionadded to a solution of 0.78 g
  4. customresulted in the formation of a precipitate
  5. customThe crude product was removed by filtration
  6. customrecrystallized from hexane m.p. 175°-177° C.
  7. customto give 1.0 g

출처 및 근거

ORD 기록
ord-7a839cecf3a847daa7fceadecd52a48a
출처 데이터셋
uspto-grants-1981_03
특허 번호
US04255568

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