Sodium Hydroxide → 4-[(Oxan-4-yl)oxy]benzoic acid

HRID 880326Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 880326
[O:1]1[CH2:6][CH2:5][CH:4]([O:7][C:8]2[CH:17]=[CH:16][C:11]([C:12]([O:14]C)=[O:13])=[CH:10][CH:9]=2)[CH2:3][CH2:2]1.[OH-].[Na+]>CO.O>[O:1]1[CH2:2][CH2:3][CH:4]([O:7][C:8]2[CH:17]=[CH:16][C:11]([C:12]([OH:14])=[O:13])=[CH:10][CH:9]=2)[CH2:5][CH2:6]1

Komponenten

5

Edukt 2

HCID 14798Sodium HydroxideHCID 57770570HCID 57770570, Verbindung

Produkt 1

HCID 242295194-[(Oxan-4-yl)oxy]benzoic acidAusbeute 98,6 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 887MethanolLösungsmittelHCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

To a solution of methyl 4-((tetrahydro-2H-pyran-4-yl)oxy)benzoate (400 mg, 1.6 mmol) in MeOH (10 ml) was added a solution of NaOH (128 mg, 3.2 mmol) in H2O (4 mL) at 22° C. The mixture was stirred at 50° C. for 4 h. The mixture was concentrated and the residue was treated with water and extracted with EA. The water layer was treated with 2N HCl to pH=3. The water layer was then extracted with EA. The organic layer was washed with brine, dried over Na2SO4 and concentrated to give the title product which was used in next step without further purification (350 mg, Yield 98.6%). 1H NMR (CDCl3, 400 MHz): δ 8.08 (d, J=8.9 Hz, 2H), 6.98 (d, J=8.9 Hz, 2H), 4.64 (tt, J=7.7, 3.8 Hz, 1H), 3.95-4.09 (m, 2H), 3.64 (ddd, J=11.6, 8.2, 3.3 Hz, 2H), 2.01-2.13 (m, 2H), 1.78-1.93 (m, 2H).

Aufarbeitung

  1. concentrationThe mixture was concentrated
  2. additionthe residue was treated with water
  3. extractionextracted with EA
  4. additionThe water layer was treated with 2N HCl to pH=3
  5. extractionThe water layer was then extracted with EA
  6. washThe organic layer was washed with brine
  7. dry with materialdried over Na2SO4
  8. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-d252798653164d93bae0abec1a538c55
Quelldatensatz
uspto-grants-2015_03
Patentnummer
US08993555B2

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