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

HRID 3180

反应方程式

HRID 3180 反应方程式
[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]

参与物

5

反应物 3

HCID 24758氢化钠HCID 79177溴乙酸叔丁酯HCID 104949152-Amino-6-(2,6-dichlorophenyl)-pyrido[2,3-d]pyrimidin-7-ol

产物 1

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

试剂、催化剂与溶剂 1

HCID 6228N,N-二甲基甲酰胺溶剂

反应条件

温度
50 °C

实验过程

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.

后处理

  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

来源与证据

ORD记录
ord-16c20da4564840b98de831447344a71e
来源数据集
uspto-grants-1998_03
专利号
US05733914

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