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Potassium Phosphate, Tribasic → 3-(4-{[(1S,2S)-2-(5-methoxypyridin-2-yl)cyclopropyl]methoxy}-2-methylpyrimidin-5-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole

HRID 872059
Notes
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Reaction equation

HRID 872059 reaction equation
Br[C:2]1[C:3]([O:9][CH2:10][C@H:11]2[CH2:13][C@@H:12]2[C:14]2[CH:19]=[CH:18][C:17]([O:20][CH3:21])=[CH:16][N:15]=2)=[N:4][C:5]([CH3:8])=[N:6][CH:7]=1.CC1(C)C(C)(C)OB([C:30]2[CH:34]=[N:33][N:32]3[CH2:35][CH2:36][CH2:37][C:31]=23)O1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].COC1C=CC=C(OC)C=1C1C=CC=CC=1P(C1CCCCC1)C1CCCCC1>C1COCC1.O.CCOC(C)=O.CC([O-])=O.CC([O-])=O.[Pd+2]>[CH3:21][O:20][C:17]1[CH:18]=[CH:19][C:14]([C@H:12]2[CH2:13][C@@H:11]2[CH2:10][O:9][C:3]2[C:2]([C:30]3[CH:34]=[N:33][N:32]4[CH2:35][CH2:36][CH2:37][C:31]=34)=[CH:7][N:6]=[C:5]([CH3:8])[N:4]=2)=[N:15][CH:16]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

9

Reactant 4

HCID 62657Potassium Phosphate, TribasicHCID 112698722-Dicyclohexylphosphino-2',6'-dimethoxybiphenylHCID 710613855-bromo-4-(((1S,2S)-2-(5-methoxypyridin-2-yl)cyclopropyl)methoxy)-2-methylpyrimidineHCID 710628193-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4H,5H,6H-pyrrolo[1,2-b]pyrazole

Product 1

HCID 71488676
3-(4-{[(1S,2S)-2-(5-methoxypyridin-2-yl)cyclopropyl]methoxy}-2-methylpyrimidin-5-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole

Reagents, catalysts & solvents 4

HCID 167845palladium(II) acetateCatalystHCID 962WaterSolventHCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of 5-bromo-4-{[(1S,2S)-2-(5-methoxypyridin-2-yl)cyclopropyl]-methoxy}-2-methylpyrimidine (2-3) (120 mg, 0.3 mmol), 3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazole (OO2) (104 mg, 0.4 mmol), tripotassium phosphate (145 mg, 0.7 mmol), S-Phos (14 mg, 0.03 mmol), and Pd(OAc)2 (3.9 mg, 0.02 mmol) in THF (1.5 mL) and water (0.3 mL) was heated at 100° C. for 14 hours. The reaction mixture was allowed to cool to room temperature. The mixture was then diluted with EtOAc (10 mL), washed with sodium bicarbonate (2 mL) and brine (2 mL), dried over MgSO4, filtered and concentrated. The crude residue was purified by reverse phase chromatography (Waters Sunfire Prep C18 OBD, 5-45% acetonitrile in water with 0.1% TFA modifier) to afford the title compound as a colorless gum. 1H NMR (500 MHz, DMSO): δ 8.51 (s, 1 H), 8.14 (d, J=2.9 Hz, 1 H), 7.84 (s, 1 H), 7.31-7.22 (m, 2 H), 4.53 (dd, J=11.3, 6.4 Hz, 1 H), 4.25 (dd, J=11.3, 8.2 Hz, 1 H), 4.04 (t, J=7.3 Hz, 2 H), 3.78 (s, 3 H), 2.97 (t, J=7.3 Hz, 2 H), 2.50 (s, 3 H), 2.39-2.32 (m, 2 H), 2.19 (dd, J=8.4, 4.7 Hz, 1 H), 1.79 (m, 1 H), 1.17 (dt, J=8.6, 4.5 Hz, 1 H), 1.06 (dd, J=8.6, 4.9 Hz, 1 H); HRMS m/z (M+H) 378.1921 found, 378.1925 required.

Workup

  1. temperatureto cool to room temperature
  2. washwashed with sodium bicarbonate (2 mL) and brine (2 mL)
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe crude residue was purified by reverse phase chromatography (Waters Sunfire Prep C18 OBD, 5-45% acetonitrile in water with 0.1% TFA modifier)

Sources & evidence

ORD record
ord-3cc8ecd0997f4e5182910b276a20fb00
Source dataset
uspto-grants-2015_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08975261B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes