N-bromobutanimide → Ethyl 2-(4-bromomethylphenoxy)-2-methylpropionate

HRID 2058075Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2058075
[C:1]1([CH3:16])[CH:6]=[CH:5][C:4]([O:7][C:8]([CH3:15])([CH3:14])[C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:3][CH:2]=1.[Br:17]N1C(=O)CCC1=O>C(OOC(=O)C1C=CC=CC=1)(=O)C1C=CC=CC=1.C(Cl)(Cl)(Cl)Cl>[Br:17][CH2:16][C:1]1[CH:6]=[CH:5][C:4]([O:7][C:8]([CH3:15])([CH3:14])[C:9]([O:11][CH2:12][CH3:13])=[O:10])=[CH:3][CH:2]=1

Komponenten

5

Edukt 2

HCID 67184N-bromobutanimideHCID 1531788Ethyl 2-methyl-2-(4-methylphenoxy)propanoate

Produkt 1

HCID 12870372Ethyl 2-(4-bromomethylphenoxy)-2-methylpropionateAusbeute 67,5 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 7187Benzoyl PeroxideKatalysatorHCID 5943Carbon TetrachlorideLösungsmittel

Versuchsvorschrift

(a) A mixture of 20 g of ethyl 2-(p-tolyloxy)-2-methylpropionate, 17.7 g of N-bromosuccinimide, 0.2 g of benzoyl peroxide and 140 ml of anhydrous carbon tetrachloride is refluxed under heating for 4 hours. After the reaction, the reaction mixture is left to stand for cooling and washed with water. The carbon tetrachloride layer is dried and then concentrated. The resulting oily product (28 g) is distilled under reduced pressure to give 18.3 g of ethyl 2-(4-bromomethylphenoxy)-2-methylpropionate, bp 146° to 148° C./1-2 mmHg.

Aufarbeitung

  1. temperatureis refluxed
  2. temperatureunder heating for 4 hours
  3. customAfter the reaction
  4. waitthe reaction mixture is left
  5. temperaturefor cooling
  6. washwashed with water
  7. dry with materialThe carbon tetrachloride layer is dried
  8. concentrationconcentrated
  9. distillationThe resulting oily product (28 g) is distilled under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-ec106db9c730455e99d7402e9f187a82
Quelldatensatz
uspto-grants-1980_07
Patentnummer
US04214094

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