3-Methylpentanoic acid → 3-methyl-pentanoic acid {1-benzenesulfonyl-4-[1-(2-cyano-ethyl)-piperidin-4-ylamino]-1H-pyrrolo[2,3-b]pyridin-5-yl}-amide

HRID 1257610Notes

Reaction equation

HRID 1257610 reaction equation
[CH3:1][CH:2]([CH2:7][CH3:8])[CH2:3][C:4]([OH:6])=O.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.C(N(C(C)C)CC)(C)C.[NH2:42][C:43]1[C:44]([NH:61][CH:62]2[CH2:67][CH2:66][N:65]([CH2:68][CH2:69][C:70]#[N:71])[CH2:64][CH2:63]2)=[C:45]2[CH:51]=[CH:50][N:49]([S:52]([C:55]3[CH:60]=[CH:59][CH:58]=[CH:57][CH:56]=3)(=[O:54])=[O:53])[C:46]2=[N:47][CH:48]=1>CN(C=O)C>[C:55]1([S:52]([N:49]2[C:46]3=[N:47][CH:48]=[C:43]([NH:42][C:4](=[O:6])[CH2:3][CH:2]([CH3:1])[CH2:7][CH3:8])[C:44]([NH:61][CH:62]4[CH2:63][CH2:64][N:65]([CH2:68][CH2:69][C:70]#[N:71])[CH2:66][CH2:67]4)=[C:45]3[CH:51]=[CH:50]2)(=[O:53])=[O:54])[CH:60]=[CH:59][CH:58]=[CH:57][CH:56]=1

Participants

6

Reactant 4

HCID 77553-Methylpentanoic acidHCID 81531DiisopropylethylamineHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 673456183-[4-(5-amino-1-benzenesulfonyl-1H-pyrrolo[2,3-b]pyridin-4-ylamino)-piperidin-1-yl]-propionitrile

Product 1

HCID 673443913-methyl-pentanoic acid {1-benzenesulfonyl-4-[1-(2-cyano-ethyl)-piperidin-4-ylamino]-1H-pyrrolo[2,3-b]pyridin-5-yl}-amideYield 110%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
25 °C

Procedure

Racemic 3-methylpentanoic acid (0.180 ml, 1.4 mmol), HATU (0.53 g, 1.4 mmol), and diisopropylethylamine (0.46 ml, 2.7 mmol), were added sequentially to a solution of 3-[4-(5-amino-1-benzenesulfonyl-1H-pyrrolo[2,3-b]pyridin-4-ylamino)-piperidin-1-yl]-propionitrile (0.54 g, 1.3 mmol, prepared as described in Example 118) in DMF (20 ml) at 25° C. The reaction mixture was stirred for 4 h at 25° C., then was concentrated under reduced pressure. The residue was partitioned between half-saturated NaHCO3 (100 ml) and EtOAc (2×200 ml). The organic layers were dried over MgSO4, filtered, and the filtrate was concentrated under reduced pressure. Purification of the residue by column chromatography on silica gel (gradient: 0 to 8% CH3OH in CH2Cl2) afforded 3-methyl-pentanoic acid {1-benzenesulfonyl-4-[1-(2-cyano-ethyl)-piperidin-4-ylamino]-1H-pyrrolo[2,3-b]pyridin-5-yl}-amide (0.706 g, 110%) as an off-white solid. LCMS (Method G, ESI): RT=0.73 min, m+H=523.4. This material was used in the next step below without further characterization.

Workup

  1. concentrationwas concentrated under reduced pressure
  2. customThe residue was partitioned between half-saturated NaHCO3 (100 ml) and EtOAc (2×200 ml)
  3. dry with materialThe organic layers were dried over MgSO4
  4. filtrationfiltered
  5. concentrationthe filtrate was concentrated under reduced pressure
  6. customPurification of the residue by column chromatography on silica gel (gradient: 0 to 8% CH3OH in CH2Cl2)

Sources & evidence

ORD record
ord-4147295757a64182a2c54c9184e3e660
Source dataset
uspto-grants-2013_06
Patent number
US08461328B2

Reaction notes

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