Phosphorus oxychloride → HCID 86683174, compound

HRID 1852065Notes

Reaction equation

HRID 1852065 reaction equation
[CH:1]([O:4][C:5]1[N:10]=[CH:9][C:8]([C:11]2[N:12]=[C:13](O)[C:14]3[C:19]([CH:20]=2)=[CH:18][C:17]([O:21][CH3:22])=[CH:16][CH:15]=3)=[CH:7][CH:6]=1)([CH3:3])[CH3:2].O=P(Cl)(Cl)[Cl:26]>>[Cl:26][C:13]1[C:14]2[C:19](=[CH:18][C:17]([O:21][CH3:22])=[CH:16][CH:15]=2)[CH:20]=[C:11]([C:8]2[CH:9]=[N:10][C:5]([O:4][CH:1]([CH3:3])[CH3:2])=[CH:6][CH:7]=2)[N:12]=1

Participants

3

Reactant 2

HCID 24813Phosphorus oxychlorideHCID 178487738HCID 178487738, compound

Product 1

HCID 86683174HCID 86683174, compoundYield 68.2%

Procedure

A solution of 3-(6-isopropoxypyridin-3-yl)-6-methoxyisoquinolin-1-ol (400 mg, 1.289 mmol) in POCl3 (5 mL, 53.6 mmol) was refluxed for 14 h. Concentrated the solvent. The residue was taken into a mixture of DCM and 4N NaOH solution. The solution was adjusted PH to 7. The organic phase was collected and dried over sodium sulfate, filtered, then concentrated under vacuum. The crude material was purified by silica gel chromatography using 10% EtOAc/Hexanes as eluent to give 289 mg of the desired product 1-chloro-3-(6-isopropoxypyridin-3-yl)-6-methoxyisoquinoline as a solid. 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 8.83 (dd, J=2.6, 0.6 Hz, 1H), 8.32 (dd, J=8.5, 2.5 Hz, 1H), 8.22 (d, J=9.3 Hz, 1H), 7.82 (s, 1H), 7.253 (dd, J=6.8, 2.5 Hz, 1H), 7.13 (d, J=2.5 Hz, 1H), 6.81 (dd, J=8.7, 0.6 Hz, 1H), 5.40 (quin, J=6.1 Hz, 1H), 4.00 (s, 3H), 1.41 (d, J=6.0 Hz, 6H). MS: MS m/z 329.02 (M++1).

Workup

  1. concentrationConcentrated the solvent
  2. additionThe residue was taken into a mixture of DCM and 4N NaOH solution
  3. customThe organic phase was collected
  4. dry with materialdried over sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under vacuum
  7. customThe crude material was purified by silica gel chromatography

Sources & evidence

ORD record
ord-f21dcdf4aa804b87a9e9c6ab90acf418
Source dataset
uspto-grants-2015_02
Patent number
US08957203B2

Reaction notes

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