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

HRID 513052

반응식

HRID 513052 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.CC(OC1C=CC=C(OC(C)C)C=1C1C(P(C2CCCCC2)C2CCCCC2)=CC=CC=1)C.C(=O)([O-])[O-].[Cs+].[Cs+].FC(F)(F)C(O)=O.[F:62][C:63]1[CH:64]=[C:65]([C@@H:69]2[NH:73][CH2:72][C@@H:71]([C:74]#[N:75])[CH2:70]2)[CH:66]=[CH:67][CH:68]=1>C([O-])(=O)C.[Pd+2].C([O-])(=O)C.CC(O)(C)C>[C:74]([C@@H:71]1[CH2:72][N:73]([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:69]([C:65]2[CH:66]=[CH:67][CH:68]=[C:63]([F:62])[CH:64]=2)[CH2:70]1)#[N:75]

참가 물질

7

반응물 4

HCID 10796Cesium carbonateHCID 162179852-Dicyclohexylphosphino-2',6'-diisopropoxybiphenylHCID 53249841Ethyl 5-bromopyrazolo[1,5-a]pyridine-3-carboxylateHCID 66691683(3S,5R)-5-(3-fluorophenyl)pyrrolidine-3-carbonitrile 2,2,2-trifluoroacetate

생성물 1

HCID 60171691ethyl 5-((2R,4S)-4-cyano-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyridine-3-carboxylate

시약·촉매·용매 2

HCID 167845palladium(II) acetate촉매HCID 6386tert-Butanol용매

반응 조건

온도
120 °C

실험 절차

A N2 purged flask was charged with ethyl 5-bromopyrazolo[1,5-a]pyridine-3-carboxylate (30 mg, 0.11 mmol), palladium acetate (1.0 mg, 5 μmol), RuPhos (5 mg, 10 μmol), cesium carbonate (65 mg, 0.20 mmol), tBuOH (0.5 mL) and (3S,5R)-5-(3-fluorophenyl)pyrrolidine-3-carbonitrile 2,2,2-trifluoroacetate (I-31) (30 mg, 0.10 mmol). The contents were heated to 120° C. overnight in an oil bath. Upon cooling to room temperature the reaction was filtered through celite and concentrated. The crude product was purified by column chromatography on silica gel with an EtOAc/hexane gradient as eluant to yield ethyl 5-((2R,4S)-4-cyano-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyridine-3-carboxylate (X-19). 1H NMR (400 MHz, CDCl3) δ 8.25 (s, 1 H), 8.22 (d, J=7.6 Hz, 1 H), 7.40-7.32 (m, 1 H), 7.07-6.96 (m, 3 H), 6.88 (d, J=9.4 Hz, 1 H), 6.24 (dd, J=2.7, 7.6 Hz, 1 H), 5.10 (dd, J=2.5, 8.0 Hz, 1 H), 4.39-4.29 (m, 2 H), 4.23-4.14 (m, 1 H), 3.95-3.78 (m, 1 H), 3.42-3.29 (m, 1 H), 2.92-2.78 (m, 1 H), 2.50-2.39 (m, 1 H), 1.36 (t, J=7.1 Hz, 3 H). MS m/z 379.1 (M+1)+. Further elution with MeOH/DCM gradient afforded ethyl 5-((2R,4S)-4-carbamoyl-2-(3-fluorophenyl)pyrrolidin-1-yl)pyrazolo[1,5-a]pyridine-3-carboxylate (X-20). MS m/z 397.1 (M+1)+.

후처리

  1. temperatureUpon cooling to room temperature the reaction
  2. filtrationwas filtered through celite
  3. concentrationconcentrated
  4. customThe crude product was purified by column chromatography on silica gel with an EtOAc/hexane gradient as eluant

출처 및 근거

ORD 기록
ord-6a36a33b3d9f48b58a37cc466935123c
출처 데이터셋
uspto-grants-2015_08
특허 번호
US09102671B2

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