Sodium hydride → tert-butyl 2-[2-amino-6-(2,6-dichlorophenyl)-7-oxo-7H,8H-pyrido[2,3-d]pyrimidin-8-yl]acetate

HRID 3180

반응식

HRID 3180 반응식
[H-].[Na+].[NH2:3][C:4]1[N:5]=[CH:6][C:7]2[CH:13]=[C:12]([C:14]3[C:19]([Cl:20])=[CH:18][CH:17]=[CH:16][C:15]=3[Cl:21])[C:11](=[O:22])[NH:10][C:8]=2[N:9]=1.Br[CH2:24][C:25]([O:27][C:28]([CH3:31])([CH3:30])[CH3:29])=[O:26]>CN(C)C=O>[C:28]([O:27][C:25](=[O:26])[CH2:24][N:10]1[C:8]2[N:9]=[C:4]([NH2:3])[N:5]=[CH:6][C:7]=2[CH:13]=[C:12]([C:14]2[C:15]([Cl:21])=[CH:16][CH:17]=[CH:18][C:19]=2[Cl:20])[C:11]1=[O:22])([CH3:31])([CH3:30])[CH3:29]

참가 물질

5

반응물 3

HCID 24758Sodium hydrideHCID 79177tert-Butyl bromoacetateHCID 104949152-Amino-6-(2,6-dichlorophenyl)-pyrido[2,3-d]pyrimidin-7-ol

생성물 1

HCID 5328630tert-butyl 2-[2-amino-6-(2,6-dichlorophenyl)-7-oxo-7H,8H-pyrido[2,3-d]pyrimidin-8-yl]acetate수율 30.1%

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

반응 조건

온도
50 °C

실험 절차

To a suspension of NaH (60% in mineral oil, 67 mg) in 10 mL of dimethylformamide was added 2-amino-6-(2,6-dichlorophenyl)-pyrido[2,3-d]pyrimidin-7(8H)-one (398 mg, 1.30 mmol). The mixture was heated at 45° C. to 55° C. for 40 minutes resulting in a clear solution. Tert-butyl bromoacetate (250 μL, 1.69 mmol) was added, and the solution was stirred at 50° C. for several minutes, then cooled to room temperature and poured onto 60 mL of ice water. The resulting precipitate was removed by filtration and washed with water. The solid was purified by flash chromatography, eluting with a gradient of 1:2 hexane:ethyl acetate to all ethyl acetate to provide 165 mg (30%) of [2-amino-6-(2,6-dichlorophenyl)-7-oxo-7H-pyrido[2,3-d]pyrimidin-8-yl]-acetic acid tert-butyl ester; mp 171°-173° C.

후처리

  1. temperatureThe mixture was heated at 45° C. to 55° C. for 40 minutes
  2. customresulting in a clear solution
  3. temperaturecooled to room temperature
  4. customThe resulting precipitate was removed by filtration
  5. washwashed with water
  6. customThe solid was purified by flash chromatography
  7. washeluting with a gradient of 1:2 hexane

출처 및 근거

ORD 기록
ord-16c20da4564840b98de831447344a71e
출처 데이터셋
uspto-grants-1998_03
특허 번호
US05733914

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