Cesium carbonate → [(S)-1-(7-Cyclopropyl-6-fluoro-1-phenyl-1H-benzoimidazol-2-yl)ethyl]-[9-(tetrahydropyran-2-yl)-9H-purin-6-yl]amine

HRID 242965Notes

Reaction equation

HRID 242965 reaction equation
Br[C:2]1[C:7]2[N:8]([C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=3)[C:9]([C@@H:11]([NH:13][C:14]3[N:22]=[CH:21][N:20]=[C:19]4[C:15]=3[N:16]=[CH:17][N:18]4[CH:23]3[CH2:28][CH2:27][CH2:26][CH2:25][O:24]3)[CH3:12])=[N:10][C:6]=2[CH:5]=[CH:4][C:3]=1[F:35].[CH:36]1(B(O)O)[CH2:38][CH2:37]1.C([O-])([O-])=O.[Cs+].[Cs+]>O1CCOCC1.O.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:36]1([C:2]2[C:7]3[N:8]([C:29]4[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=4)[C:9]([C@@H:11]([NH:13][C:14]4[N:22]=[CH:21][N:20]=[C:19]5[C:15]=4[N:16]=[CH:17][N:18]5[CH:23]4[CH2:28][CH2:27][CH2:26][CH2:25][O:24]4)[CH3:12])=[N:10][C:6]=3[CH:5]=[CH:4][C:3]=2[F:35])[CH2:38][CH2:37]1

Participants

7

Reactant 3

HCID 10796Cesium carbonateHCID 2760897Cyclopropylboronic acid2×HCID 68157939[(S)-1-(7-Bromo-6-fluoro-1-phenyl-1H-benzoimidazol-2-yl)ethyl]-[9-(tetrahydropyran-2-yl)-9H-purin-6-yl]amine

Product 1

HCID 68158162[(S)-1-(7-Cyclopropyl-6-fluoro-1-phenyl-1H-benzoimidazol-2-yl)ethyl]-[9-(tetrahydropyran-2-yl)-9H-purin-6-yl]amineYield 44.7%

Reagents, catalysts & solvents 3

HCID 178418397HCID 178418397, compoundCatalystHCID 962WaterSolventHCID 312751,4-DioxaneSolvent2×

Conditions

Temperature
100 °C

Procedure

A mixture of [(S)-1-(7-bromo-6-fluoro-1-phenyl-1H-benzoimidazol-2-yl)ethyl]-[9-(tetrahydropyran-2-yl)-9H-purin-6-yl]amine (50 mg, 0.09 mmol), cyclopropylboronic acid (10 mg, 0.12 mmol) and Cs2CO3 (46 mg, 0.14 mmol) in a 4:1 mixture dioxane:water (2.5 mL) was degassed with a stream of argon prior to addition of Pd(PPh3)4 (5 mg) and was heated at 100° C. for 18 h in a sealed vial. Additional cyclopropylboronic acid (10 mg, 0.12 mmol) and Pd(PPh3)4 (5 mg) in dioxane (0.25 mL) were added and stirring at 100° C. in a sealed vial was continued for 3 h. The reaction mixture was diluted with water and extracted with EtOAc (×3). The combined organic fractions were washed with brine, dried (MgSO4) and concentrated in vacuo. The resulting residue was purified by reverse phase HPLC (Phenomenex Gemini 5 μm C18 on a 25 min gradient 10-90%, 0.1% HCO2H in acetonitrile/water) to afford the title compound (20 mg, 43%). LCMS (Method C): RT 3.32 min [M+H]+ 498.1.

Workup

  1. customwater (2.5 mL) was degassed with a stream of argon
  2. additionto addition of Pd(PPh3)4 (5 mg)
  3. extractionextracted with EtOAc (×3)
  4. washThe combined organic fractions were washed with brine
  5. dry with materialdried (MgSO4)
  6. concentrationconcentrated in vacuo
  7. customThe resulting residue was purified by reverse phase HPLC (Phenomenex Gemini 5 μm C18 on a 25 min gradient 10-90%, 0.1% HCO2H in acetonitrile/water)

Sources & evidence

ORD record
ord-037b8363dec84cf89913f5b951470947
Source dataset
uspto-grants-2014_02
Patent number
US08653089B2

Reaction notes

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