4-Phenoxybenzoic acid → n-{2-[Methyl-(1-methyl-pyrrolidin-3-ylmethyl)-amino]-benzooxazol-5-yl}-4-phenoxy-benzamide

HRID 1174931Notes

Reaction equation

HRID 1174931 reaction equation
[CH3:1][N:2]([CH2:13][CH:14]1[CH2:18][CH2:17][N:16]([CH3:19])[CH2:15]1)[C:3]1[O:4][C:5]2[CH:11]=[CH:10][C:9]([NH2:12])=[CH:8][C:6]=2[N:7]=1.[O:20]([C:27]1[CH:35]=[CH:34][C:30]([C:31](O)=[O:32])=[CH:29][CH:28]=1)[C:21]1[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=1.CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>C(Cl)Cl>[CH3:1][N:2]([CH2:13][CH:14]1[CH2:18][CH2:17][N:16]([CH3:19])[CH2:15]1)[C:3]1[O:4][C:5]2[CH:11]=[CH:10][C:9]([NH:12][C:31](=[O:32])[C:30]3[CH:29]=[CH:28][C:27]([O:20][C:21]4[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=4)=[CH:35][CH:34]=3)=[CH:8][C:6]=2[N:7]=1

Participants

5

Reactant 3

HCID 751824-Phenoxybenzoic acidHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 57771749Rac-n2-methyl-n2-(1-methyl-pyrrolidin-3-ylmethyl)-benzooxazole-2,5-diamine

Product 1

HCID 11525350n-{2-[Methyl-(1-methyl-pyrrolidin-3-ylmethyl)-amino]-benzooxazol-5-yl}-4-phenoxy-benzamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Combine rac-N2-methyl-N2-(1-methyl-pyrrolidin-3-ylmethyl)-benzooxazole-2,5-diamine (0.034 g, 0.131 mmol), 4-phenoxy-benzoic acid (0.042 g, 0.196 mmol), HATU (0.050 g, 0.131 mmol), polystyrene-bound diisopropylamine (0.327 g, loading: 2.0 to 3.5 mmol/g), and CH2Cl2 (10 mL). Shake the mixture overnight at room temperature. Filter the mixture and wash the polystyrene resin with 1:1 CH2Cl2/MeOH. Concentrate the solution in vacuo. Dilute with CH2Cl2, wash with 1.0M NaOH (2×25 mL), dry over Na2SO4, filter, and concentrate in vacuo. Subject the residue to silica gel flash column chromatography on an ISCO Companion (4 g column, eluting with 10% 2N NH3 in MeOH/CH2Cl2) to yield the desired product as a white oil. Dissolve in CH2Cl2 and add n-hexane. Re-concentrate to yield the desired product as a white solid (0.031 g, 52%). mass spectrum (m/e): 457.3 (M+1), 455.3 (M−1). 1H NMR (400 MHz, DMSO-d6): δ 10.12 (s, 1H), 8.01-7.99 (m, 2H), 7.70-7.68 (m, 1H), 7.49-7.42 (m, 2H), 7.35-7.32 (m, 2H), 7.25-7.20 (m, 1H), 7.13-7.07 (m, 4H), 3.52-3.47 (d, J=8.0 Hz, 2H), 3.12 (s, 3H), 2.66-2.55 (m, 1H), 2.55-2.47 (m, 2H), 2.43-2.35 (m, 1H), 2.55-2.47 (m, 2H), 2.43-2.35 (m, 1H), 2.28-2.24 (m, 1H), 2.23 (s, 3H), 1.93-1.83 (m, 1H), 1.49-1.39 (m, 1H).

Workup

  1. customthe mixture overnight
  2. customat room temperature
  3. filtrationFilter the mixture
  4. washwash the polystyrene resin with 1:1 CH2Cl2/MeOH
  5. concentrationConcentrate the solution in vacuo
  6. additionDilute with CH2Cl2
  7. washwash with 1.0M NaOH (2×25 mL)
  8. dry with materialdry over Na2SO4
  9. filtrationfilter
  10. concentrationconcentrate in vacuo
  11. washon an ISCO Companion (4 g column, eluting with 10% 2N NH3 in MeOH/CH2Cl2)

Sources & evidence

ORD record
ord-d4bbf8bd9fd54bda88ed7b2f72949fc8
Source dataset
uspto-grants-2010_11
Patent number
US07838543B2

Reaction notes

Loading…