Reaktion #2314277

Reaktionsgleichung

1,1-dichloromethl methy ether

n-dodecylbenzene

→

p-n-Dodecylbenzaldehyde

Ausbeute 40.0%

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe reaction system kept below 10° C. in an ice bath
2. 2
   workup.STIRRINGfurther stirred at a room temperature for 45 minutes
3. 3
   SonstigeThe resultant reaction mixture
4. 4
   ExtraktionIt was extracted four times with 200 mL of dichloromethane
5. 5
   Sonstigedried overnight on sodium sulfate
6. 6
   SonstigeThe solvent was removed by the use of an evaporator
7. 7
   Sonstigepurified by column chromatography (silica gel, benzene:hexene =1:1)
8. 8
   SonstigeConsequently, 11.22 g (40.2 mmol) of a light yellow slightly viscous liquid was obtained

Vorschrift

To 70 mL of dehydrated dichloromethane, 24.68 g (100 mmol) of n-dodecylbenzene was added and 36.82 g (189 mmol) of titanium tetrachloride was gradually added in drops. The reaction system kept below 10° C. in an ice bath and 13.16 9 (114 mmol) of 1,1-dichloromethl methy ether added in drops thereto were stirred together below 10° C. for 30 minutes and further stirred at a room temperature for 45 minutes. The resultant reaction mixture was added to 500 mL of ice water. It was extracted four times with 200 mL of dichloromethane and dried overnight on sodium sulfate. The solvent was removed by the use of an evaporator and purified by column chromatography (silica gel, benzene:hexene =1:1). Consequently, 11.22 g (40.2 mmol) of a light yellow slightly viscous liquid was obtained. The yield was 40%.

Quelle