1,1-Dichloroethane → HCID 86617085, compound

HRID 2077230Notes

Reaction equation

HRID 2077230 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-50b13176c766447ba9c844cae31253da
Source dataset
uspto-grants-2011_04
Patent number
US07928120B2

Reaction notes

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