Benzenepropanoic acid → Methyl 3-phenylpropionate

HRID 129372

Reaktionsgleichung

Reaktionsgleichung von HRID 129372
[C:1]1([CH2:7][CH2:8][C:9]([OH:11])=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.S(=O)(=O)(O)O.[CH3:17]O>>[C:1]1([CH2:7][CH2:8][C:9]([O:11][CH3:17])=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Komponenten

4

Edukt 3

HCID 107Benzenepropanoic acidHCID 887MethanolHCID 1118Sulfuric Acid

Produkt 1

HCID 7643Methyl 3-phenylpropionate

Versuchsvorschrift

A solution of 3-phenylpropionic acid (50 g, 0.33 mole) and conc. sulfuric acid (5 g) in methanol (220 ml) was refluxed for 1 hour with stirring, concentrated and poured into cold H2O. The mixture was extracted thrice with methylene chloride (75 ml), the organic layer was washed thrice with H2O (125 ml), dried over anhydrous MgSO4 and evaporated. The residual crude oil (54 g) was distilled under reduced pressure to give 51.5 g of methyl 3-phenylpropionate as a colorless oil having a boiling point of 94°-95° C./5 mmHg.

Aufarbeitung

  1. concentrationconcentrated
  2. additionpoured into cold H2O
  3. extractionThe mixture was extracted thrice with methylene chloride (75 ml)
  4. washthe organic layer was washed thrice with H2O (125 ml)
  5. dry with materialdried over anhydrous MgSO4
  6. customevaporated
  7. distillationThe residual crude oil (54 g) was distilled under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-7856235b707843d0969564f945d077cb
Quelldatensatz
uspto-grants-1995_11
Patentnummer
US05468589

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