Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1) → (-)-2-(7-Cyano-1H-benzimidazol-1-yl)-N-{1-[4-(1-cyano-1-methylethyl)-3-methylphenyl]ethyl}acetamide

HRID 420009Notes

Reaction equation

HRID 420009 reaction equation
[C:1]([C:3]1[C:8]2[N:9]([CH2:12][C:13]([OH:15])=O)[CH:10]=[N:11][C:7]=2[CH:6]=[CH:5][CH:4]=1)#[N:2].[NH2:16][CH:17]([C:19]1[CH:24]=[CH:23][C:22]([C:25]([CH3:29])([CH3:28])[C:26]#[N:27])=[C:21]([CH3:30])[CH:20]=1)[CH3:18].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C1C=CN=CC=1)C.CN(C=O)C.CO>[C:1]([C:3]1[C:8]2[N:9]([CH2:12][C:13]([NH:16][CH:17]([C:19]3[CH:24]=[CH:23][C:22]([C:25]([C:26]#[N:27])([CH3:29])[CH3:28])=[C:21]([CH3:30])[CH:20]=3)[CH3:18])=[O:15])[CH:10]=[N:11][C:7]=2[CH:6]=[CH:5][CH:4]=1)#[N:2]

Participants

7

Reactant 3

HCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 11195002(7-Cyano-1H-benzimidazol-1-yl)acetic acidHCID 582984602-[4-(1-Aminoethyl)-2-methylphenyl]-2-methylpropanenitrile

Product 1

HCID 24850225(-)-2-(7-Cyano-1H-benzimidazol-1-yl)-N-{1-[4-(1-cyano-1-methylethyl)-3-methylphenyl]ethyl}acetamideYield 75%

Reagents, catalysts & solvents 3

HCID 142844-(Dimethylamino)pyridineCatalystHCID 887MethanolSolventHCID 6228DimethylformamideSolvent

Procedure

To a solution of (7-cyano-1H-benzimidazol-1-yl)acetic acid (100 mg, 0.50 mmol) prepared according to scheme 3, 2-{4-[1-aminoethyl]-2-methylphenyl}-2-methylpropanenitrile (101 mg, 0.50 mmol) prepared according to scheme 16 and DMAP (120 mg, 1.00 mmol) stirred in anhydrous DMF (2.0 mL) is added HATU (189 mg, 0.50 mmol) after 18 hours of stirring, the mixture is diluted with Methanol (200 μL) the solution is purified directly on a preparative on a preparative LCMS system equipped with a Synergi Polar (4u) 21.2×50 mm column, mobile phase: A=water (0.1% TFA), B=MeCN using a short 40 to 60% B 10 min. gradient method. The pure fractions are combined the TFA neutralized with a 4N NaOH solution and then extracted with ethyl acetate which is separated dried over anhydrous Na2SO4, filtered and concentrated under reduced pressure to provide the expected product (+) and (−)-2-(7-Cyano-1H-benzimidazol-1-yl)-N-{1-[4-(1-cyano-1-methylethyl)-3-methylphenyl]ethyl}acetamide (143 mg, 75%) as a white solid. 1H NMR (400 MHz, METHANOL-D4) δ ppm 1.49 (d, J=7.03 Hz, 3H) 1.75 (s, 6H) 2.61 (s, 3H) 4.99 (q, J=7.03 Hz, 1H) 5.28-5.40 (m, 2H) 7.21-7.29 (m, 2H) 7.33 (d, J=8.20 Hz, 1H) 7.37-7.44 (m, 1H) 7.69 (dd, J=7.42, 0.78 Hz, 1H) 7.98 (dd, J=8.20, 1.17 Hz, 1H) 8.27 (s, 1H) MS [M+H], calcd: 386.2. found: 386.2.

Workup

  1. customprepared
  2. customis purified directly on a preparative on a preparative LCMS system
  3. customequipped with a Synergi Polar (4u) 21.2×50 mm column, mobile phase
  4. customa short 40 to 60% B 10 min. gradient method
  5. extractionextracted with ethyl acetate which
  6. customis separated
  7. dry with materialdried over anhydrous Na2SO4
  8. filtrationfiltered
  9. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-01490fc9ee934ba9a9a399bb797f58fe
Source dataset
uspto-grants-2012_01
Patent number
US08093402B2

Reaction notes

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