Aluminium lithium hydride → 2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)-N-(4-(3-hydroxy-2,2-dimethylpropyl)-3-(trifluoromethyl)phenyl)acetamide

HRID 1428572Notes

Reaction equation

HRID 1428572 reaction equation
[CH2:1]([O:3][C:4]1[CH:5]=[C:6]([C:20]2[CH:25]=[CH:24][C:23]([CH2:26][C:27]([NH:29][C:30]3[CH:35]=[CH:34][C:33]([CH2:36][C:37]([CH3:44])([CH3:43])[C:38](OCC)=[O:39])=[C:32]([C:45]([F:48])([F:47])[F:46])[CH:31]=3)=[O:28])=[C:22]([F:49])[CH:21]=2)[CH:7]=[N:8][C:9]=1[O:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][CH:13]=1)[CH3:2].[H-].[H-].[H-].[H-].[Li+].[Al+3]>C1COCC1>[CH2:1]([O:3][C:4]1[CH:5]=[C:6]([C:20]2[CH:25]=[CH:24][C:23]([CH2:26][C:27]([NH:29][C:30]3[CH:35]=[CH:34][C:33]([CH2:36][C:37]([CH3:44])([CH3:43])[CH2:38][OH:39])=[C:32]([C:45]([F:46])([F:48])[F:47])[CH:31]=3)=[O:28])=[C:22]([F:49])[CH:21]=2)[CH:7]=[N:8][C:9]=1[O:10][CH2:11][C:12]1[CH:13]=[CH:14][C:15]([O:18][CH3:19])=[CH:16][CH:17]=1)[CH3:2]

Participants

4

Reactant 2

HCID 21226445Aluminium lithium hydrideHCID 90415745Ethyl 3-(4-(2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)acetamido)-2-(trifluoromethyl)phenyl)-2,2-dimethylpropanoate

Product 1

HCID 904180242-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)-N-(4-(3-hydroxy-2,2-dimethylpropyl)-3-(trifluoromethyl)phenyl)acetamideYield 82.1%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
0 °C

Procedure

To a mixture of ethyl 3-(4-(2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)acetamido)-2-(trifluoromethyl)phenyl)-2,2-dimethylpropanoate (3.5 g, 5.13 mmol) in THF (200 mL) cooled to 0° C. was added LAH (0.389 g, 10.25 mmol) in portions. The mixture was stirred at 0° C. for 30 min. The mixture was quenched with 15% NaOH (aq., 10 mL). The mixture was dried over Na2SO4. The mixture was filtered and the filtrate was concentrated. The residue was purified on silica column chromatography (PE/EA=8:1). All fractions found to contain product by TLC (PE/EA=2:1, Rf=0.35) were combined and concentrated to yield a light yellow oil of 2-(4-(5-ethoxy-6-((4-methoxybenzyl)oxy)pyridin-3-yl)-2-fluorophenyl)-N-(4-(3-hydroxy-2,2-dimethylpropyl)-3-(trifluoromethyl)phenyl)acetamide (3 g, 4.21 mmol, 82.0% yield): 1H NMR (400 MHz, CD3OD) δ: 7.93 (d, J=2.0 Hz, 2H), 7.71 (d, J=8.4 Hz, 1H), 7.47-7.31 (m, 7H), 6.90 (d, J=8.4 Hz, 2H), 5.35 (s, 2H), 4.17-4.10 (m, 2H), 3.82-3.74 (m, 5H), 3.31-3.30 (m, 2H), 2.77 (s, 2H), 1.41 (t, J=6.8 Hz, 3H), 0.82 (s, 6H); ES-LCMS m/z 635 (M−120).

Workup

  1. customThe mixture was quenched with 15% NaOH (aq., 10 mL)
  2. dry with materialThe mixture was dried over Na2SO4
  3. filtrationThe mixture was filtered
  4. concentrationthe filtrate was concentrated
  5. customThe residue was purified on silica column chromatography (PE/EA=8:1)
  6. concentrationconcentrated

Sources & evidence

ORD record
ord-fa9f6f3fe30d4d05b53707c830559124
Source dataset
uspto-grants-2015_01
Patent number
US08937071B2

Reaction notes

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