Dicyclohexylcarbodiimide → 3-{6-[2-(2,4-Dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-benzoic acid 2-morpholin-4-yl-ethyl ester

HRID 216221Notes

Reaction equation

HRID 216221 reaction equation
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[CH2:9][CH2:10][NH:11][C:12]1[N:17]=[C:16]([O:18][CH3:19])[N:15]=[C:14]([C:20]2[CH:21]=[C:22]([CH:26]=[CH:27][CH:28]=2)[C:23]([OH:25])=[O:24])[CH:13]=1.O[CH2:30][CH2:31][N:32]1[CH2:37][CH2:36][O:35][CH2:34][CH2:33]1.C1(N=C=NC2CCCCC2)CCCCC1>CN(C)C1C=CN=CC=1.C1COCC1.C(Cl)Cl>[N:32]1([CH2:31][CH2:30][O:24][C:23](=[O:25])[C:22]2[CH:26]=[CH:27][CH:28]=[C:20]([C:14]3[CH:13]=[C:12]([NH:11][CH2:10][CH2:9][C:3]4[CH:4]=[CH:5][C:6]([Cl:8])=[CH:7][C:2]=4[Cl:1])[N:17]=[C:16]([O:18][CH3:19])[N:15]=3)[CH:21]=2)[CH2:37][CH2:36][O:35][CH2:34][CH2:33]1

Participants

6

Reactant 3

HCID 10868DicyclohexylcarbodiimideHCID 611632-MorpholinoethanolHCID 533205273-{6-[2-(2,4-Dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-benzoic acid

Product 1

HCID 115266143-{6-[2-(2,4-Dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-benzoic acid 2-morpholin-4-yl-ethyl esterYield 43.9%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 21919333Tetrahydrofurane dichloromethaneSolvent

Procedure

4-Dimethylaminopyridine (4.4 mg, 0.036 mmol) is added to a stirred solution of 3-{6-[2-(2,4-dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-benzoic acid (100 mg, 0.24 mmol), N-(2-hydroxyethyl) morpholine (29.07 μL, 0.24 mmol) and 1,3-dicyclohexylcarbodiimide (0.31 mL, 1 M solution in DCM) in dry THF/DCM (6 mL, 1:1) and the reaction mixture is stirred for 5.5 hours at room temperature under nitrogen atmosphere. The mixture is filtered over a pad of Celite and the filtrate concentrated under reduced pressure. The residue is dissolved EtOAc (30 mL), washed with saturated aqueous sodium bicarbonate and brine, dried over sodium sulfate, filtered and concentrated under reduced pressure. The crude residue is purified by chromatography (SiO2 packed column) eluting with ethyl acetate/heptane to afford 3-{6-[2-(2,4-dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-benzoic acid 2-morpholin-4-yl-ethyl ester (56 mg, Example 75). LCMS: RT=2.07 minutes, MS: 534 (M+H); 1H NMR, (300 MHz, CDCl3): □8.62 (1H, s), 8.3 (1H, d, J=3.5 Hz), 8.1 (1H, d, J=3.5 Hz), 7.55 (1H, t, J=3.5 Hz), 7.42 (1H, s), 7.2 (2H, s), 6.48 (1H, s), 5.04 (1H, b), 4.5 (2H, t, J=2 Hz), 4.05 (3H, s), 3.72 (6H, t, J=2 Hz), 3.1 (2H, t, J=2 Hz), 2.8 (2H, t, 2 Hz), 2.6 (4H, t, 2 Hz).

Workup

  1. filtrationThe mixture is filtered over a pad of Celite
  2. concentrationthe filtrate concentrated under reduced pressure
  3. dissolutionThe residue is dissolved EtOAc (30 mL)
  4. washwashed with saturated aqueous sodium bicarbonate and brine
  5. dry with materialdried over sodium sulfate
  6. filtrationfiltered
  7. concentrationconcentrated under reduced pressure
  8. customThe crude residue is purified by chromatography (SiO2 packed column)
  9. washeluting with ethyl acetate/heptane

Sources & evidence

ORD record
ord-12fc4901647d4a1bb09c38356c56fb76
Source dataset
uspto-grants-2012_06
Patent number
US08193183B2

Reaction notes

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