Cesium carbonate → (3aR,6aR)-3-(6-Chloro-2-morpholinopyrimidin-4-yl)tetrahydrofuro[3,4-d]oxazol-2(3H)-one

HRID 538924

반응식

HRID 538924 반응식
[O:1]1[C@H:5]2[CH2:6][O:7][CH2:8][C@H:4]2[NH:3][C:2]1=[O:9].[Cl:10][C:11]1[CH:16]=[C:15](Cl)[N:14]=[C:13]([N:18]2[CH2:23][CH2:22][O:21][CH2:20][CH2:19]2)[N:12]=1.C([O-])([O-])=O.[Cs+].[Cs+].C([O-])(O)=O.[Na+]>O1CCOCC1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].C1(P(C2C=CC=CC=2)C2C3OC4C(=CC=CC=4P(C4C=CC=CC=4)C4C=CC=CC=4)C(C)(C)C=3C=CC=2)C=CC=CC=1.[Ar]>[Cl:10][C:11]1[N:12]=[C:13]([N:18]2[CH2:23][CH2:22][O:21][CH2:20][CH2:19]2)[N:14]=[C:15]([N:3]2[C@@H:4]3[CH2:8][O:7][CH2:6][C@@H:5]3[O:1][C:2]2=[O:9])[CH:16]=1

참가 물질

8

반응물 4

HCID 10796Cesium carbonateHCID 516892Sodium BicarbonateHCID 27720684-(4,6-Dichloropyrimidin-2-yl)morpholineHCID 55303430(3aR,6aR)-tetrahydrofuro[3,4-d]oxazol-2(3H)-one

생성물 1

HCID 86694354(3aR,6aR)-3-(6-Chloro-2-morpholinopyrimidin-4-yl)tetrahydrofuro[3,4-d]oxazol-2(3H)-one수율 88.6%

시약·촉매·용매 3

HCID 9811564Bis(dibenzylideneacetone)palladium촉매HCID 86694355Argon 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene촉매HCID 312751,4-Dioxane용매

반응 조건

온도
85 °C

실험 절차

To a solution of (3aR,6aR)-tetrahydrofuro[3,4-d]oxazol-2(3H)-one (500 mg, 3.87 mmol), 4-(4,6-dichloropyrimidin-2-yl)morpholine (1088 mg, 4.65 mmol) and Cs2CO3 (2.14 g, 6.58 mmol) in dioxane (20 mL) was added after degassing with argon 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (157 mg, 0.271 mmol) and Pd2(dba)3 (70.9 mg, 0.077 mmol) and the reaction mixture was heated for 6 h at 85° C. The reaction mixture was added to 10% aqueous NaHCO3 solution and extracted with EtOAc. Combined extracts were washed with brine, dried over MgSO4, filtered and concentrated. The crude product was triturated in MeOH overnight, filtered off and dried to afford the title compound as a colorless solid (1.12 g, 87%): tR=0.92 min (LC-MS 3); ESI-MS: 327, 329 [M+H]+ (LC-MS 3).

후처리

  1. extractionextracted with EtOAc
  2. washCombined extracts were washed with brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude product was triturated in MeOH overnight
  7. filtrationfiltered off
  8. customdried

출처 및 근거

ORD 기록
ord-bda22b43dbb34821baabd86acef054a1
출처 데이터셋
uspto-grants-2014_10
특허 번호
US08865894B2

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