Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1) → HCID 59607745, compound

HRID 1945070Notes

Reaction equation

HRID 1945070 reaction equation
[CH3:1][O:2][C:3]1[O:4][C:5]([C:8]([OH:10])=O)=[CH:6][N:7]=1.Cl.[NH2:12][C@H:13]([CH2:20][C:21]1[CH:26]=[CH:25][C:24]([C:27]2[CH:32]=[CH:31][CH:30]=[C:29]([Cl:33])[CH:28]=2)=[CH:23][CH:22]=1)[CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16].CN(C(ON1N=NC2C=CC=NC1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F>CN(C=O)C.C(Cl)Cl>[Cl:33][C:29]1[CH:28]=[C:27]([C:24]2[CH:25]=[CH:26][C:21]([CH2:20][C@@H:13]([NH:12][C:8]([C:5]3[O:4][C:3]([O:2][CH3:1])=[N:7][CH:6]=3)=[O:10])[CH2:14][C:15]([O:17][CH2:18][CH3:19])=[O:16])=[CH:22][CH:23]=2)[CH:32]=[CH:31][CH:30]=1

Participants

6

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 553038672-Methoxyoxazole-5-carboxylic acidHCID 86648190(R)-ethyl 3-amino-4-(3'-chlorobiphenyl-4-yl)butanoate hydrochloride

Product 1

HCID 59607745HCID 59607745, compound

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolvent

Procedure

To a solution of 2-methoxyoxazole-5-carboxylic acid, intermediate 16, (98 mg, 0.69 mmol) and (R)-ethyl 3-amino-4-(3′-chlorobiphenyl-4-yl)butanoate hydrochloride (210 mg, 0.57 mmol) in DMF (10 mL) and CH2Cl2 (4 mL) is added HATU (272 mg, 0.72 mmol) and TEA (0.50 mL, 3.58 mmol). The crude is stirred at room temperature for 2 hrs. The crude is quenched with water and diluted in EtOAc. The organic layer is washed with water 3×, brine, dried over MgSO4, filtered, and concentrated. The crude is purified via flash chromatography using 30% EtOAc/heptane to 70% EtOAc/heptane to give (R)-ethyl 4-(3′-chlorobiphenyl-4-yl)-3-(2-methoxyoxazole-5-carboxamido)butanoate (122 mg). HPLC retention time=1.89 minutes (condition A); MS (m+1)=443.2; 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 1.28 (t, J=7.1 Hz, 3H), 2.52-2.66 (m, 2H), 2.94 (dd, 1H), 3.08 (dd, J=13.6, 6.3 Hz, 1H), 4.12 (s, 3H), 4.14-4.23 (m, 2H), 4.60-4.71 (m, 1H), 6.81 (d, J=8.8 Hz, 1H), 7.25-7.32 (m, 3H), 7.35 (t, J=7.7 Hz, 1H), 7.42 (s, 1H), 7.43-7.47 (m, 1H), 7.48-7.54 (m, 2H), 7.55 (t, J=1.6 Hz, 1H).

Workup

  1. customThe crude is quenched with water
  2. additiondiluted in EtOAc
  3. washThe organic layer is washed with water 3×, brine
  4. dry with materialdried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated
  7. customThe crude is purified via flash chromatography

Sources & evidence

ORD record
ord-d89bc0ac7ea848adaabecbb96278b5e2
Source dataset
uspto-grants-2013_03
Patent number
US08394853B2

Reaction notes

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