Hydrogen Peroxide → 2,2-Difluoro-7-methyl-1,3-benzodioxol-4-ol

HRID 527656Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 527656
[F:1][C:2]1([F:15])[O:6][C:5]2[C:7]([CH3:14])=[CH:8][CH:9]=[C:10](B(O)O)[C:4]=2[O:3]1.[OH:16]O.[OH-].[Na+]>C1COCC1>[F:1][C:2]1([F:15])[O:6][C:5]2[C:7]([CH3:14])=[CH:8][CH:9]=[C:10]([OH:16])[C:4]=2[O:3]1

Komponenten

5

Edukt 3

HCID 784Hydrogen PeroxideHCID 14798Sodium HydroxideHCID 86698459(2,2-Difluoro-7-methyl-1,3-benzodioxol-4-yl)boronic acid2×

Produkt 1

HCID 679596912,2-Difluoro-7-methyl-1,3-benzodioxol-4-olAusbeute 58,1 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

(2,2-difluoro-7-methyl-1,3-benzodioxol-4-yl)boronic acid (Intermediate 196, 150 mg, 1.28 mmol) was dissolved in THF (1.5 mL) and a 30% w/w aqueous solution of H2O2 (2.56 mmol) and NaOH (51 mg, 1.28 mmol) were added and the reaction mixture stirred for 2 days at room temperature. The reaction was quenched with a 2N aqueous solution of HCl and diluted with ethyl acetate. Two phases were separated and the organic layer was washed twice with brine, dried over Na2SO4 and evaporated to dryness, affording the title compound (140 mg) as yellow oil.

Aufarbeitung

  1. customThe reaction was quenched with a 2N aqueous solution of HCl
  2. additiondiluted with ethyl acetate
  3. customTwo phases were separated
  4. washthe organic layer was washed twice with brine
  5. dry with materialdried over Na2SO4
  6. customevaporated to dryness

Quellen und Nachweise

ORD-Eintrag
ord-ef75648e01f84eef917e7717f6c8ff8c
Quelldatensatz
uspto-grants-2016_05
Patentnummer
US09346790B2

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