Cesium carbonate → ethyl 5-((2R,4S)-4-fluoro-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyridine-3-carboxylate

HRID 513041

반응식

HRID 513041 반응식
Br[C:2]1[CH:7]=[CH:6][N:5]2[N:8]=[CH:9][C:10]([C:11]([O:13][CH2:14][CH3:15])=[O:12])=[C:4]2[CH:3]=1.CC1(C)C2C(=C(P(C3C=CC=CC=3)C3C=CC=CC=3)C=CC=2)OC2C(P(C3C=CC=CC=3)C3C=CC=CC=3)=CC=CC1=2.C(=O)([O-])[O-].[Cs+].[Cs+].[F:64][C@@H:65]1[CH2:69][NH:68][C@@H:67]([C:70]2[CH:75]=[CH:74][CH:73]=[C:72]([F:76])[CH:71]=2)[CH2:66]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.C1C=CC(/C=C/C(/C=C/C2C=CC=CC=2)=O)=CC=1.[Pd].[Pd].O1CCOCC1>[F:64][C@@H:65]1[CH2:69][N:68]([C:2]2[CH:7]=[CH:6][N:5]3[N:8]=[CH:9][C:10]([C:11]([O:13][CH2:14][CH3:15])=[O:12])=[C:4]3[CH:3]=2)[C@@H:67]([C:70]2[CH:75]=[CH:74][CH:73]=[C:72]([F:76])[CH:71]=2)[CH2:66]1

참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 6360441,1'-(9,9-Dimethyl-9H-xanthene-4,5-diyl)bis(1,1-diphenylphosphine)HCID 53249841Ethyl 5-bromopyrazolo[1,5-a]pyridine-3-carboxylateHCID 66684522(2R,4S)-4-fluoro-2-(3-fluorophenyl)pyrrolidine

생성물 1

HCID 60165028ethyl 5-((2R,4S)-4-fluoro-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyridine-3-carboxylate

시약·촉매·용매 2

HCID 9811564Bis(dibenzylideneacetone)palladium촉매HCID 312751,4-Dioxane용매

반응 조건

온도
120 °C

실험 절차

A N2 purged flask was charged with ethyl 5-bromopyrazolo[1,5-a]pyridine-3-carboxylate (27 mg, 0.1 mmol), tris(dibenzylideneacetone)dipalladium(0) (2 mg, 2 μmol), xantphos (5 mg, 8 μmol), cesium carbonate (46 mg, 0.14 mmol), 1,4-dioxane (0.5 mL) and (2R,4S)-4-fluoro-2-(3-fluorophenyl)pyrrolidine (I-6) (18 mg, 0.1 mmol). The contents were heated to 120° C. for 12 hours. Upon cooling to room temperature the reaction was partitioned with EtOAc and water. The organic layer was washed with water, brine, dried over magnesium sulfate, filtered and reduced to dryness. The crude product was purified by column chromatography on silica gel with EtOAc/hexanes gradient as eluant to yield ethyl 5-((2R,4S)-4-fluoro-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyridine-3-carboxylate (X-1). 1H NMR (400 MHz, CDCl3) δ 8.20 (s, 1 H), 8.16 (d, J=7.6 Hz, 1 H), 7.31 (td, J=5.6, 7.6 Hz, 1 H), 7.05 (d, J=7.6 Hz, 1 H), 6.98 (d, J=2.8 Hz, 1 H), 6.96-6.91 (m, 2 H), 6.24 (dd, J=2.8, 8.0 Hz, 1 H), 5.39 (d, J=52.8 Hz, 1 H), 5.04 (dd, J=7.2, 9.2 Hz, 1H), 4.34-4.26 (m, 2 H), 4.17-3.90 (m, 2 H), 2.93-2.81 (m, 1 H), 2.11 (dddd, J=3.6, 9.2, 13.2, 40.8 Hz, 1 H). MS m/z 372.1 (M+1)+.

후처리

  1. temperatureUpon cooling to room temperature the reaction
  2. customwas partitioned with EtOAc and water
  3. washThe organic layer was washed with water, brine
  4. dry with materialdried over magnesium sulfate
  5. filtrationfiltered
  6. customThe crude product was purified by column chromatography on silica gel with EtOAc/hexanes gradient as eluant

출처 및 근거

ORD 기록
ord-cd37d316d9d8428d95597e21b332dd68
출처 데이터셋
uspto-grants-2015_08
특허 번호
US09102671B2

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