Cesium carbonate → tert-butyl 2-(3-(5-chloro-2-methoxyphenyl)-4-(pyrazolo[1,5-a]pyrimidine-3-carboxamido)-1H-pyrazol-1-yl)acetate

HRID 1466606노트

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HRID 1466606 반응식
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:25][CH3:26])=[C:6]([C:8]2[C:12]([NH:13][C:14]([C:16]3[C:24]4[N:23]=[CH:22]N=CC=4NN=3)=[O:15])=[CH:11][NH:10][N:9]=2)[CH:7]=1.[C:27]([O:31][C:32](=[O:35])[CH2:33]Br)([CH3:30])([CH3:29])[CH3:28].C(=O)([O-])[O-].[Cs+].[Cs+].C(=O)([O-])[O-]>CCOC(C)=O.O>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]([O:25][CH3:26])=[C:6]([C:8]2[C:12]([NH:13][C:14]([C:16]3[CH:11]=[N:10][N:9]4[CH:8]=[CH:6][CH:22]=[N:23][C:24]=34)=[O:15])=[CH:11][N:10]([CH2:33][C:32]([O:31][C:27]([CH3:30])([CH3:29])[CH3:28])=[O:35])[N:9]=2)[CH:7]=1

참가 물질

6

반응물 4

HCID 10796Cesium carbonateHCID 19660Carbonate IonHCID 79177tert-Butyl bromoacetate2회HCID 178490636HCID 178490636, 화합물

생성물 1

HCID 66900073tert-butyl 2-(3-(5-chloro-2-methoxyphenyl)-4-(pyrazolo[1,5-a]pyrimidine-3-carboxamido)-1H-pyrazol-1-yl)acetate수율 141.9%

시약·촉매·용매 1

HCID 22728543Water ethylacetate용매

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온도
30 °C

실험 절차

N-(3-(5-chloro-2-methoxyphenyl)-1H-pyrazol-4-yl)pyrazolo pyrimidine-3-carboxamide (2.0 g, 5.4 mmol), t-butyl-bromoacetate (0.88 mL, 6.0 mmol), and cesium carbonate (2.1 g, 6.5 mmol) were combined and stirred at 30° C. overnight. The mixture was warmed to 65° C. at which time additional carbonate and t-butylbromoacetate was added and stirred 8 hrs. The mixture was cooled to ambient temperature and stirred overnight, then partitioned EtOAc/water. The organic phase was separated, washed with brine, dried (Na2SO4), filtered through silica gel, and concentrated to a solid. The solid was washed with 1:1 EtOAc/hexanes to yield 1.85 g (71%) of tert-butyl 2-(3-(5-chloro-2-methoxyphenyl)-4-(pyrazolo[1,5-a]pyrimidine-3-carboxamido)-1H-pyrazol-1-yl)acetate as yellow crystals. LCMS (ESI) m+H=483.0. 1H NMR (400 MHz, CDCl3) δ 9.74 (s, 1H), 8.77 (m, 1H), 8.73 (s, 1H), 8.51 (m, 1H0, 8.38 (s, 1H), 8.02 (s, 1H), 7.58 (s, 1H), 7.31 (m, 1H), 6.97 (m, 2H), 4.85 (s, 2H), 3.83 (s, 3H), 1.49 (s, 9H).

후처리

  1. additionwas added
  2. stirringstirred 8 hrs
  3. temperatureThe mixture was cooled to ambient temperature
  4. stirringstirred overnight
  5. customThe organic phase was separated
  6. washwashed with brine
  7. dry with materialdried (Na2SO4)
  8. filtrationfiltered through silica gel
  9. concentrationconcentrated to a solid
  10. washThe solid was washed with 1:1 EtOAc/hexanes

출처 및 근거

ORD 기록
ord-015c64253466459985697793754c418d
출처 데이터셋
uspto-grants-2015_04
특허 번호
US08999998B2

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