Acetylacetone → HCID 90412515, compound

HRID 573943

Reaction equation

HRID 573943 reaction equation
Br[C:2]1[CH:7]=[CH:6][C:5]([C:8]2[N:12]=[CH:11][N:10]([C:13]3[CH:18]=[CH:17][C:16]([O:19][C:20]([F:23])([F:22])[F:21])=[CH:15][CH:14]=3)[N:9]=2)=[CH:4][CH:3]=1.P([O-])([O-])([O-])=O.[K+].[K+].[K+].CC(=O)[CH2:34][C:35](=[O:37])[CH3:36]>CS(C)=O.[Cu]I>[F:21][C:20]([F:23])([F:22])[O:19][C:16]1[CH:17]=[CH:18][C:13]([N:10]2[CH:11]=[N:12][C:8]([C:5]3[CH:6]=[CH:7][C:2]([CH2:34][C:35](=[O:37])[CH3:36])=[CH:3][CH:4]=3)=[N:9]2)=[CH:14][CH:15]=1

Participants

6

Reactant 3

HCID 31261AcetylacetoneHCID 62657Potassium Phosphate, TribasicHCID 904040773-(4-bromophenyl)-1-(4-(trifluoromethoxy)phenyl)-1 H-1,2,4-triazole

Product 1

HCID 90412515HCID 90412515, compoundYield 35.3%

Reagents, catalysts & solvents 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
110 °C

Procedure

3-(4-Bromophenyl)-1-(4-(trifluoromethoxy)phenyl)-1H-1,2,4-triazole (C52) (11 g, 29 mmol), copper(I) iodide (0.55 g, 2.9 mmol), potassium phosphate (18 g, 86 mmol), and pentane-2,4-dione (8.9 mL, 86 mmol) were dissolved in dimethylsulfoxide (120 mL) in a 500 mL round bottomed flask. The reaction was heated at 110° C. for 19 hours. The solution was cooled to room temperature and then quenched with hydrogen chloride (2 N). The excess base was removed by gravity filtration and the filtrate was extracted with ethyl acetate. The organics were washed with water, extracted, dried, and concentrated. Purification by flash column chromatography using 0-30% ethyl acetate/hexanes afforded the title compound as a pure orange solid (3.7 g, 35%): 1H NMR (400 MHz, CDCl3) δ 8.56 (s, 1H), 8.17 (d, J=8.2 Hz, 2H), 7.80 (d, J=9.0 Hz, 2H), 7.39 (dt, J=8.1, 1.0 Hz, 2H), 7.33 (dd, J=8.1, 0.6 Hz, 2H), 3.76 (s, 2H), 2.19 (s, 3H); ESIMS m/z 361 ([M]+).

Workup

  1. temperatureThe solution was cooled to room temperature
  2. customquenched with hydrogen chloride (2 N)
  3. customThe excess base was removed by gravity filtration
  4. extractionthe filtrate was extracted with ethyl acetate
  5. washThe organics were washed with water
  6. extractionextracted
  7. customdried
  8. concentrationconcentrated
  9. customPurification by flash column chromatography

Sources & evidence

ORD record
ord-f8711a210c5043c3aac2ff4b91a740c7
Source dataset
uspto-grants-2015_05
Patent number
US09029560B2

Linked notes

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