Trifluoroacetic acid → (4-chloro-2-oxoquinolin-1(2H)-yl)acetaldehyde

HRID 39726Notes

Reaction equation

HRID 39726 reaction equation
FC(F)(F)C(O)=O.[O:8]1CCO[CH:9]1[CH2:13][N:14]1[C:23]2[C:18](=[CH:19][CH:20]=[CH:21][CH:22]=2)[C:17]([Cl:24])=[CH:16][C:15]1=[O:25]>>[Cl:24][C:17]1[C:18]2[C:23](=[CH:22][CH:21]=[CH:20][CH:19]=2)[N:14]([CH2:13][CH:9]=[O:8])[C:15](=[O:25])[CH:16]=1

Participants

3

Reactant 2

HCID 6422Trifluoroacetic acidHCID 59398226HCID 59398226, compound

Product 1

HCID 59398313(4-chloro-2-oxoquinolin-1(2H)-yl)acetaldehyde

Procedure

Into 3 mL of a 90% aqueous trifluoroacetic acid solution, 156 mg of 1-(1,3-dioxolan-2-ylmethyl)-4-chloroquinolin-2(1H)-one was dissolved, and the mixture was stirred at room temperature overnight. The solvent was removed under reduced pressure, and the reaction mixture was alkalified with an aqueous saturated sodium hydrogen carbonate solution, and then extracted with ethyl acetate. The organic layer was washed sequentially with water and an aqueous saturated sodium chloride solution, and dried over anhydrous magnesium sulfate, and the solvent was removed under reduced pressure to obtain 192 mg of a pale yellow oily substance, (4-chloro-2-oxoquinolin-1(2H)-yl)acetaldehyde.

Workup

  1. customThe solvent was removed under reduced pressure
  2. extractionextracted with ethyl acetate
  3. washThe organic layer was washed sequentially with water
  4. dry with materialan aqueous saturated sodium chloride solution, and dried over anhydrous magnesium sulfate
  5. customthe solvent was removed under reduced pressure

Sources & evidence

ORD record
ord-4a786edb6cba4750b7f60d17b93ce9d9
Source dataset
uspto-grants-2013_09
Patent number
US08524738B2

Reaction notes

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