Chloroform → Ethyl 2-(4-methoxyphenyl)-2-oxoacetate

HRID 1859305Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1859305
[Cl-].[Al+3].[Cl-].[Cl-].C(Cl)(Cl)Cl.[CH2:9]([O:11][C:12](=[O:16])[C:13](Cl)=[O:14])[CH3:10].[C:17]1([O:23][CH3:24])[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1>O>[CH2:9]([O:11][C:12](=[O:16])[C:13]([C:20]1[CH:21]=[CH:22][C:17]([O:23][CH3:24])=[CH:18][CH:19]=1)=[O:14])[CH3:10]

Komponenten

6

Edukt 4

HCID 6212ChloroformHCID 7519AnisoleHCID 20884Ethoxalyl chlorideHCID 6451240Aluminum(III) Chloride

Produkt 1

HCID 2758864Ethyl 2-(4-methoxyphenyl)-2-oxoacetate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Reaktionsbedingungen

Temperatur
5 °C

Versuchsvorschrift

Aluminum chloride (84.30 g, 632 mmol) was added to chloroform (300 ml) and chloroglyoxylic ethyl ester (60 g, 439 mmol) was added dropwise to the resulting suspension over 20 minutes at 0° C. The reaction mixture was stirred for 40 minutes at 5° C. At the same temperature, anisole (68.79 g, 636 mmol) was slowly added dropwise to the reaction solution and then stirred for 12 hours at 10° C. When the reaction is completed, the reaction solution was cooled and, after adding cooling water (100 ml), extracted with dichloromethane. The extract was dried over anhydrous magnesium sulfate and then concentrated to obtain the title compound as a yellow solid (TLC identification). The resulting compound was used in the next reaction without further purification.

Aufarbeitung

  1. additionwas added dropwise to the resulting suspension over 20 minutes at 0° C
  2. stirringstirred for 12 hours at 10° C
  3. temperaturethe reaction solution was cooled
  4. additionafter adding
  5. extractionextracted with dichloromethane
  6. dry with materialThe extract was dried over anhydrous magnesium sulfate
  7. concentrationconcentrated

Quellen und Nachweise

ORD-Eintrag
ord-51cd687d5e5945039a67b12a8cd3f9ea
Quelldatensatz
uspto-grants-2000_11
Patentnummer
US06153768

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