Isobutyric Acid → (R)-4-((R)-1-((6-(4-(4-isobutyrylpiperazin-1-yl)phenyl)-3-methyl-3H-imidazo[4,5-c]pyridin-4-yl)oxy)ethyl)pyrrolidin-2-one

HRID 2209076Notes

Reaction equation

HRID 2209076 reaction equation
[CH3:1][N:2]1[C:6]2[C:7]([O:23][C@@H:24]([C@H:26]3[CH2:30][NH:29][C:28](=[O:31])[CH2:27]3)[CH3:25])=[N:8][C:9]([C:11]3[CH:16]=[CH:15][C:14]([N:17]4[CH2:22][CH2:21][NH:20][CH2:19][CH2:18]4)=[CH:13][CH:12]=3)=[CH:10][C:5]=2[N:4]=[CH:3]1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.CN1CCOCC1.[C:63](O)(=[O:67])[CH:64]([CH3:66])[CH3:65]>CN(C=O)C>[C:63]([N:20]1[CH2:19][CH2:18][N:17]([C:14]2[CH:13]=[CH:12][C:11]([C:9]3[N:8]=[C:7]([O:23][C@@H:24]([C@H:26]4[CH2:30][NH:29][C:28](=[O:31])[CH2:27]4)[CH3:25])[C:6]4[N:2]([CH3:1])[CH:3]=[N:4][C:5]=4[CH:10]=3)=[CH:16][CH:15]=2)[CH2:22][CH2:21]1)(=[O:67])[CH:64]([CH3:66])[CH3:65]

Participants

6

Reactant 4

HCID 6590Isobutyric AcidHCID 79724-MethylmorpholineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 117844142(R)-4-((R)-1-(3-methyl-6-(4-(piperazin-1-yl)phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy)ethyl)pyrrolidin-2-one

Product 1

HCID 117843234(R)-4-((R)-1-((6-(4-(4-isobutyrylpiperazin-1-yl)phenyl)-3-methyl-3H-imidazo[4,5-c]pyridin-4-yl)oxy)ethyl)pyrrolidin-2-oneYield 56.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A vial was charged with (R)-4-((R)-1-(3-methyl-6-(4-(piperazin-1-yl)phenyl)-3H-imidazo[4,5-c]pyridin-4-yloxy)ethyl)pyrrolidin-2-one 3A.13 (32 mg, 0.076 mmol), HATU (58 mg, 0.15 mmol) and N-methylmorpholine (33 μL, 0.30 mmol) in DMF (2.0 mL). Isobutyric acid (8.5 μL, 0.091 mmol) was added and the reaction was stirred at room temperature for 18 h. The reaction was concentrated under reduced pressure and the residue was purified via prep HPLC (2-95% acetonitrile in water, 0.1% trifluoroacetic acid buffer) to isolate (R)-4-((R)-1-((6-(4-(4-isobutyrylpiperazin-1-yl)phenyl)-3-methyl-3H-imidazo[4,5-c]pyridin-4-yl)oxy)ethyl)pyrrolidin-2-one 3.36 (21 mg) as the trifluoroacetic acid salt.

Workup

  1. concentrationThe reaction was concentrated under reduced pressure
  2. customthe residue was purified via prep HPLC (2-95% acetonitrile in water, 0.1% trifluoroacetic acid buffer)

Sources & evidence

ORD record
ord-347ce49bcff34116a381224602d80e6e
Source dataset
uspto-grants-2016_06
Patent number
US09376441B2

Reaction notes

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