Tetrahydrofuran → HCID 135878214, compound

HRID 2167336Notes

Reaction equation

HRID 2167336 reaction equation
C([O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]2[O:19][N:18]=[C:17]([C:20]3[CH:32]=[CH:31][C:23]([O:24][C:25]4[CH:30]=[CH:29][CH:28]=[CH:27][N:26]=4)=[CH:22][CH:21]=3)[N:16]=2)=[CH:11][CH:10]=1)C1C=CC=CC=1.C1COCC1>CO.[Pd]>[N:26]1[CH:27]=[CH:28][CH:29]=[CH:30][C:25]=1[O:24][C:23]1[CH:31]=[CH:32][C:20]([C:17]2[N:16]=[C:15]([C:12]3[CH:11]=[CH:10][C:9]([OH:8])=[CH:14][CH:13]=3)[O:19][N:18]=2)=[CH:21][CH:22]=1

Participants

5

Reactant 2

HCID 8028TetrahydrofuranHCID 44128288HCID 44128288, compound

Product 1

HCID 135878214HCID 135878214, compoundYield 5.6%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 887MethanolSolvent

Conditions

Temperature
55 °C

Procedure

2-(4-(5-(4-(Benzyloxy)phenyl)-1,2,4-oxadiazol-3-yl)phenoxy)pyridine (310 mg, 376 μmol) was placed in a single neck round bottom flask, suspended in methanol (5.0 mL) and THF (5.0 mL) and 10% Pd/C (0.5 mg, 5.0 μmol) was added. A condenser was placed on top of the flask and then sealed. The solution was stirred under H2 at 55° C. for 22 hours. While hot, the solution was filtered through Celite washed with additional methanol and the solvent was removed under reduced pressure. The solid residue was purified by silica gel column chromatography (EtOAc/Hex 1:2) to give the product as a white solid (7 mg, 3%). 1H NMR (500 MHz, CDCL3) δ(ppm): 7.00 (2H, d, J=8.8 Hz), 7.14 (1H, d, J=8.2 Hz), 7.05 (1H, ddd, J=7.3, 5.0, 1.0 Hz), 7.32 (2H, d, J=8.8 Hz), 7.92 (1H, ddd, J=8.8, 8.2, 2.0 Hz), 8.03 (2H, d, J=8.8 Hz), 8.11 (2H, d, J=8.8 Hz), 8.21 (1H, ddd, J=5.0, 2.0, 1.0 Hz). 13C NMR (125 MHz, CDCL3) δ(ppm): 112.2 (CH), 114.1, 116.3 (CH), 119.7 (CH), 121.5 (CH), 122.4, 128.7 (CH), 130.1 (CH), 140.5 (CH), 147.6 (CH), 156.6, 162.1, 162.4 167.6, 175.5. MS (FAB+): 332 (MH+). HRMS for C19H13N3O3 (MH+): calculated: 332.1035; found 332.1049.

Workup

  1. customA condenser was placed on top of the flask
  2. customsealed
  3. filtrationWhile hot, the solution was filtered through Celite
  4. washwashed with additional methanol
  5. customthe solvent was removed under reduced pressure
  6. customThe solid residue was purified by silica gel column chromatography (EtOAc/Hex 1:2)

Sources & evidence

ORD record
ord-47fbdd68911a41ceb62b4e0a456ebad0
Source dataset
uspto-grants-2015_06
Patent number
US09045442B2

Reaction notes

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