Triethylamine → 3-(4-acetamidopiperidin-1-yl)-N-(2-((2,4-dichloro-3-(((2-methoxy-1-(pyridin-2-ylmethyl)-1H-benzo[d]imidazol-4-yl)oxy)methyl)phenyl)(methyl)amino)-2-oxoethyl)propanamide

HRID 889181Notes

Reaction equation

HRID 889181 reaction equation
[NH2:1][CH2:2][C:3]([N:5]([C:7]1[CH:12]=[CH:11][C:10]([Cl:13])=[C:9]([CH2:14][O:15][C:16]2[C:24]3[N:23]=[C:22]([O:25][CH3:26])[N:21]([CH2:27][C:28]4[CH:33]=[CH:32][CH:31]=[CH:30][N:29]=4)[C:20]=3[CH:19]=[CH:18][CH:17]=2)[C:8]=1[Cl:34])[CH3:6])=[O:4].C(N(CC)CC)C.[C:42]([NH:45][CH:46]1[CH2:51][CH2:50][N:49]([CH2:52][CH2:53][C:54](O)=[O:55])[CH2:48][CH2:47]1)(=[O:44])[CH3:43].CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C>[C:42]([NH:45][CH:46]1[CH2:47][CH2:48][N:49]([CH2:52][CH2:53][C:54]([NH:1][CH2:2][C:3]([N:5]([C:7]2[CH:12]=[CH:11][C:10]([Cl:13])=[C:9]([CH2:14][O:15][C:16]3[C:24]4[N:23]=[C:22]([O:25][CH3:26])[N:21]([CH2:27][C:28]5[CH:33]=[CH:32][CH:31]=[CH:30][N:29]=5)[C:20]=4[CH:19]=[CH:18][CH:17]=3)[C:8]=2[Cl:34])[CH3:6])=[O:4])=[O:55])[CH2:50][CH2:51]1)(=[O:44])[CH3:43]

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 2733084Methanaminium, N-((1H-benzotriazol-1-yloxy)(dimethylamino)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 667603673-(4-Acetamidopiperidin-1-yl)propanoic acidHCID 667603852-amino-N-(2,4-dichloro-3-(((2-methoxy-1-(pyridin-2-ylmethyl)-1H-benzo[d]imidazol-4-yl)oxy)methyl)phenyl)-N-methylacetamide

Product 1

HCID 667610893-(4-acetamidopiperidin-1-yl)-N-(2-((2,4-dichloro-3-(((2-methoxy-1-(pyridin-2-ylmethyl)-1H-benzo[d]imidazol-4-yl)oxy)methyl)phenyl)(methyl)amino)-2-oxoethyl)propanamideYield 55%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a stirred mixture of 2-amino-N-(2,4-dichloro-3-(((2-methoxy-1-(pyridin-2-ylmethyl)-1H-benzo[d]imidazol-4-yl)oxy)methyl)phenyl)-N-methylacetamide (0.30 g, 0.60 mmol) in anhydrous DMF (15 mL) was added triethyl amine (0.067 g, 0.66 mmol) under nitrogen at 0° C. The mixture was stirred for 30 min and was added 3-(4-acetamidopiperidin-1-yl)propanoic acid (0.257 g, 1.20 mmol) and HBTU (O-Benzotriazole-N,N,N′,N′-tetramethyl-uronium-hexafluoro-phosphate) (0.296 g, 0.78 mmol). The mixture was stirred at room temperature overnight, evaporated, mixed with a saturated brine solution and extracted with ethyl acetate. Evaporation gave a crude oil that was purified using silica chromatography eluting with a gradient of 2% to 30% DCM (dichloromethane)/MeOH/NH4OH (10:1:0.1). After drying at 78° C. under high vacuum, 3-(4-acetamidopiperidin-1-yl)-N-(2-((2,4-dichloro-3-(((2-methoxy-1-(pyridin-2-ylmethyl)-1H-benzo[d]imidazol-4-yl)oxy)methyl)phenyl)(methyl)amino)-2-oxoethyl)propanamide, 8, was isolated as a solid (0.23 g, 55%). LCMS (+ESI) 696 (M+1). 1H-NMR (CDCl3, δ ppm): 8.96 (bs, 1H), 8.59 (m, 1H), 7.58 (t, 1H), 7.46 (d, J=8.4 Hz, 1H), 7.27 (m, 1H), 7.19 (t, J=8.0 Hz, 1H), 6.92 (d, J=8.0 Hz, 1H), 6.82 (m, 1H), 5.66 (m, 2H), 5.48 (bd, 1H), 5.28 (s, 2H), 4.20 (s, 3H), 3.85 (m, 2H), 3.54 (dd, J=18, 3.6 Hz, 1H), 3.26 (s, 3H), 2.96 (bd, 2H), 2.62 (m, 2H), 2.37 (m, 2H), 2.14 (m, 2H), 1.97 (s, 3H), 1.96 (m, 3H). Calcd. for C34H39Cl2N7O5+1.4H2O: C, 56.57; H, 5.84; N, 13.58. Found: C, 56.44; H, 5.59; N, 13.48.

Workup

  1. stirringThe mixture was stirred at room temperature overnight
  2. customevaporated
  3. additionmixed with a saturated brine solution
  4. extractionextracted with ethyl acetate
  5. customEvaporation
  6. customgave a crude oil that
  7. customwas purified
  8. washeluting with a gradient of 2% to 30% DCM (dichloromethane)/MeOH/NH4OH (10:1:0.1)
  9. dry with materialAfter drying at 78° C. under high vacuum, 3-(4-acetamidopiperidin-1-yl)-N-(2-((2,4-dichloro-3-(((2-methoxy-1-(pyridin-2-ylmethyl)-1H-benzo[d]imidazol-4-yl)oxy)methyl)phenyl)(methyl)amino)-2-oxoethyl)propanamide, 8

Sources & evidence

ORD record
ord-e93915c998304c59b86f144f24d62b4d
Source dataset
uspto-grants-2012_08
Patent number
US08252793B2

Reaction notes

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