Hydrochloric Acid → Methyl 2-(4-hydroxyphenoxy)acetate

HRID 326558

Reaktionsgleichung

Reaktionsgleichung von HRID 326558
[OH:1][C:2]1[CH:12]=[CH:11][C:5]([O:6][CH2:7][C:8]([OH:10])=[O:9])=[CH:4][CH:3]=1.Cl.[CH3:14]O>>[OH:1][C:2]1[CH:3]=[CH:4][C:5]([O:6][CH2:7][C:8]([O:10][CH3:14])=[O:9])=[CH:11][CH:12]=1

Komponenten

4

Edukt 3

HCID 313Hydrochloric AcidHCID 887MethanolHCID 15881(4-Hydroxyphenoxy)acetic acid

Produkt 1

HCID 602731Methyl 2-(4-hydroxyphenoxy)acetate

Versuchsvorschrift

A solution of 4-hydroxyphenoxyacetic acid (33.6 g) in methanol was treated with hydrogen chloride gas and left to stand at ambient temperature overnight. The solvent was removed in vacuo and the residue taken up in ethyl acetate. This solution was washed sequentially with saturated sodium hydrogen carbonate solution (2×100 ml) and brine (100 ml), then dried (MGSO4) and the solvent evaporated to give methyl 4-hydroxyphenoxyacetate as a colourless crystalline mass, m.p. 112°-114° C.; NMR: 3.8 (s, 3H, CH3), 4.55 (s, 2H, CH2), 6.75 (s, 4H, phenyl-H) 6.8-7.8 (broad s, 1H, OH); m/e 200 (M+NH4)+.

Aufarbeitung

  1. waitleft
  2. customThe solvent was removed in vacuo
  3. washThis solution was washed sequentially with saturated sodium hydrogen carbonate solution (2×100 ml) and brine (100 ml)
  4. customdried (MGSO4)
  5. customthe solvent evaporated

Quellen und Nachweise

ORD-Eintrag
ord-933771ef539648ec8158ba86dfda7116
Quelldatensatz
uspto-grants-1993_12
Patentnummer
US05270311

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