HCID 71143718, compound → HCID 71143723, compound

HRID 1507007Notes

Reaction equation

HRID 1507007 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[C:9]([OH:31])([CH2:25][N:26]1[CH:30]=[N:29][N:28]=[N:27]1)[C:10]([C:13]1[CH:18]=[CH:17][C:16](/[CH:19]=[CH:20]/[CH2:21][O:22][CH2:23][CH3:24])=[CH:15][N:14]=1)([F:12])[F:11]>CCO.[Pd]>[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[C:9]([OH:31])([CH2:25][N:26]1[CH:30]=[N:29][N:28]=[N:27]1)[C:10]([C:13]1[CH:18]=[CH:17][C:16]([CH2:19][CH2:20][CH2:21][O:22][CH2:23][CH3:24])=[CH:15][N:14]=1)([F:11])[F:12]

Participants

4

Reactant 1

HCID 71143718HCID 71143718, compound

Product 1

HCID 71143723HCID 71143723, compoundYield 68%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 702EthanolSolvent

Procedure

To a stirred solution of (E)-2-(2,4-difluorophenyl)-1-(5-(3-ethoxyprop-1-en-1-yl)pyridin-2-yl)-1,1-difluoro-3-(1H-tetrazol-1-yl)propan-2-ol (51; 80 mg, 0.21 mmol) in EtOH (10 mL) was added 10% Pd/C (8 mg), and the mixture was stirred under hydrogen atmosphere for 2 h. After consumption of the starting material (by TLC), the reaction mixture was filtered through a pad of Celite®, and the Celite® cake was washed thoroughly with EtOAc (3×10 mL). The filtrate was concentrated under reduced pressure to obtain the crude material. Purification by silica gel column chromatography (eluting with 30% EtOAc/hexanes) afforded 53 (65 mg, 0.14 mmol, 68%) as a semi-solid. 1H NMR (500 MHz, CDCl3): δ 8.74 (s, 1H), 8.36 (s, 1H), 7.88 (s, OH), 7.64 (dd, J=8.0, 2.0 Hz, 1H), 7.50 (d, J=8.0 Hz, 1H), 7.37-7.32 (m, 1H), 6.77-6.73 (m, 1H), 6.67-6.63 (m, 1H), 5.56 (d, J=14.0 Hz, 1H), 5.09 (d, J=14.0 Hz, 1H), 3.46 (q, J=7.0 Hz, 2H), 3.39 (t, J=7.0 Hz, 2H), 2.76 (t, J=7.0 Hz, 2H), 1.90-1.85 (m, 2H), 1.20 (t, J=7.0 Hz, 3H). MS (ESI): m/z 440 (M+H)+. HPLC: 95%.

Workup

  1. customAfter consumption of the starting material (by TLC)
  2. filtrationthe reaction mixture was filtered through a pad of Celite®
  3. washthe Celite® cake was washed thoroughly with EtOAc (3×10 mL)
  4. concentrationThe filtrate was concentrated under reduced pressure
  5. customto obtain the crude material
  6. customPurification
  7. washby silica gel column chromatography (eluting with 30% EtOAc/hexanes)

Sources & evidence

ORD record
ord-8772407f3f764270b6567e7f49cf0c3f
Source dataset
uspto-grants-2015_12
Patent number
US09221791B2

Reaction notes

Loading…