1,1-Dichloroethane → HCID 86617085, compound

HRID 409305Notes

Reaction equation

HRID 409305 reaction equation
[CH2:1]([O:5][C:6]([C:8]1[N:9]=[C:10](O)[C:11]2[C:16]([C:17]=1[OH:18])=[CH:15][CH:14]=[C:13]([O:19][C:20]1[CH:21]=[CH:22][C:23]3[O:27][C:26]([N:28]([CH3:30])[CH3:29])=[N:25][C:24]=3[CH:31]=1)[CH:12]=2)=[O:7])[CH2:2][CH2:3][CH3:4].P(Cl)(Cl)([Cl:35])=O.ClC(Cl)C.C(=O)(O)[O-].[Na+]>>[CH2:1]([O:5][C:6]([C:8]1[N:9]=[C:10]([Cl:35])[C:11]2[C:16]([C:17]=1[OH:18])=[CH:15][CH:14]=[C:13]([O:19][C:20]1[CH:21]=[CH:22][C:23]3[O:27][C:26]([N:28]([CH3:30])[CH3:29])=[N:25][C:24]=3[CH:31]=1)[CH:12]=2)=[O:7])[CH2:2][CH2:3][CH3:4]

Participants

5

Reactant 4

HCID 63651,1-DichloroethaneHCID 24813Phosphorus oxychlorideHCID 516892Sodium BicarbonateHCID 178450856HCID 178450856, compound

Product 1

HCID 86617085HCID 86617085, compoundYield 58.1%

Conditions

Temperature
120 °C

Procedure

A mixture of 7-(2-dimethylamino-benzooxazol-5-yloxy)-1,4-dihydroxy-isoquinoline-3-carboxylic acid butyl ester (364 mg, 0.83 mmol), phosphorus oxychloride (92 μL, 1.00 mmol) and dichloroethane (4.5 mL) was stirred at 120° C. in a CEM microwave apparatus for thirty minutes. The mixture was then stirred with saturated sodium bicarbonate for fifteen minutes at ambient temperature. The organic layer was washed with brine, dried over anhydrous sodium sulfate, concentrated in vacuo and the residue was purified by flash column chromatography on silica gel with a gradient of ethyl acetate and dichloromethane to give the title compound as a white solid (220 mg): MS: (+) m/z 456.32 (M+1).

Workup

  1. washThe organic layer was washed with brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. concentrationconcentrated in vacuo
  4. customthe residue was purified by flash column chromatography on silica gel with a gradient of ethyl acetate and dichloromethane

Sources & evidence

ORD record
ord-40d1f5a695aa4c29936bf68428699ce9
Source dataset
uspto-grants-2014_06
Patent number
US08759373B2

Reaction notes

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