Pyridine → HCID 53666718, compound

HRID 1288691Notes

Reaction equation

HRID 1288691 reaction equation
[OH:1][CH:2]([C:11]1[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][C:12]=1[N+:21]([O-:23])=[O:22])[C:3]1[CH:4]=[N:5][O:6][C:7]=1[CH:8]1[CH2:10][CH2:9]1.[C:24](Cl)(=[O:26])[CH3:25].N1C=CC=CC=1>ClCCl>[C:24]([O:1][CH:2]([C:11]1[CH:16]=[CH:15][C:14]([C:17]([F:18])([F:20])[F:19])=[CH:13][C:12]=1[N+:21]([O-:23])=[O:22])[C:3]1[CH:4]=[N:5][O:6][C:7]=1[CH:8]1[CH2:10][CH2:9]1)(=[O:26])[CH3:25]

Participants

5

Reactant 3

HCID 1049PyridineHCID 6367Acetyl chlorideHCID 54050151HCID 54050151, compound

Product 1

HCID 53666718HCID 53666718, compoundYield 59.1%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Conditions

Temperature
0 °C

Procedure

A mixture of 4-[hydroxy-(2-nitro-4-trifluoromethylphenyl)methyl]-5-cyclopropylisoxazole (0.69 g), acetyl chloride (0.27 g) and pyridine (0.10 g) in dichloromethane (40 ml) was stirred at 0° C. for 4 hours. The mixture was quenched with water and extracted with dichloromethane. The organic extracts were dried (anhydrous magnesium sulphate) and filtered. The filtrate was evaporated to dryness. The residue was triturated with ether/petroleum ether to give 4-[acetoxy-(2-nitro-4-trifluoromethylphenyl)methyl]-5-cyclopropylisoxazole (compound 297, 0.46 g) as a yellow solid: m.p. 82° C.

Workup

  1. customThe mixture was quenched with water
  2. extractionextracted with dichloromethane
  3. dry with materialThe organic extracts were dried (anhydrous magnesium sulphate)
  4. filtrationfiltered
  5. customThe filtrate was evaporated to dryness
  6. customThe residue was triturated with ether/petroleum ether

Sources & evidence

ORD record
ord-ea30d194aed1490f8c9a5a483a2c08db
Source dataset
uspto-grants-1998_05
Patent number
US05747424

Reaction notes

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