氯化铵 → tert-Butyl 2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-hydroxy-3-(tetrahydrofuran-3-yl)propanoate

HRID 56776

反应方程式

HRID 56776 反应方程式
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:25]#[N:26])=[C:6]([C:8]2[C:13]([O:14][CH3:15])=[CH:12][N:11]([CH2:16][C:17]([O:19][C:20]([CH3:23])([CH3:22])[CH3:21])=[O:18])[C:10](=[O:24])[CH:9]=2)[CH:7]=1.[O:27]1[CH2:31][CH2:30][CH:29]([CH:32]=[O:33])[CH2:28]1.[Cl-].[NH4+]>O1CCCC1>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([C:25]#[N:26])=[C:6]([C:8]2[C:13]([O:14][CH3:15])=[CH:12][N:11]([CH:16]([CH:32]([OH:33])[CH:29]3[CH2:30][CH2:31][O:27][CH2:28]3)[C:17]([O:19][C:20]([CH3:21])([CH3:22])[CH3:23])=[O:18])[C:10](=[O:24])[CH:9]=2)[CH:7]=1

参与物

5

反应物 3

HCID 25517氯化铵HCID 157568四氢呋喃-3-羧醛HCID 117622654tert-Butyl [4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]acetate

产物 1

HCID 117622815tert-Butyl 2-[4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]-3-hydroxy-3-(tetrahydrofuran-3-yl)propanoate

试剂、催化剂与溶剂 1

HCID 8028四氢呋喃溶剂2 次

反应条件

温度
-70 °C

实验过程

At −70° C., 6.94 ml (6.94 mmol, 1.3 eq.) of bis(trimethylsilyl)lithium amide (1M in THF) were added dropwise to a solution of 2.00 g (5.34 mmol) of tert-butyl [4-(5-chloro-2-cyanophenyl)-5-methoxy-2-oxopyridin-1(2H)-yl]acetate in 50 ml of tetrahydrofuran, the mixture was stirred at −70° C. for 10 min, a solution of 801 mg (8.00 mmol, 1.5 eq.) of tetrahydrofuran-3-carbaldehyde in 4 ml of tetrahydrofuran was added and the mixture was stirred at −70° C. for 90 min. The reaction mixture was warmed to −20° C., and 25 ml of semisaturated aqueous ammonium chloride solution were added. After phase separation, the aqueous phase was extracted with diethyl ether. The combined organic phases were washed with saturated aqueous sodium chloride solution, dried (sodium sulphate), filtered, concentrated under reduced pressure and dried. The crude product was purified by flash chromatography (KP-SIL, petroleum ether/ethyl acetate 33-75%). Yield: 1.49 g (56% of theory)

后处理

  1. stirringthe mixture was stirred at −70° C. for 90 min
  2. temperatureThe reaction mixture was warmed to −20° C.
  3. customAfter phase separation
  4. extractionthe aqueous phase was extracted with diethyl ether
  5. washThe combined organic phases were washed with saturated aqueous sodium chloride solution
  6. dry with materialdried (sodium sulphate)
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customdried
  10. customThe crude product was purified by flash chromatography (KP-SIL, petroleum ether/ethyl acetate 33-75%)

来源与证据

ORD记录
ord-0cf31789b7f54dc1966a2a6529fe8676
来源数据集
uspto-grants-2016_09
专利号
US09434690B2

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