Reaktion #411971

Reaktionsgleichung

2,3-dichloro-5,6-dicyano-p-benzoquinone

compound

Diethyl 1,4-Dihydro-2,6-diisopropyl-4-(4-fluorophenyl)pyridine-3,5-dicarboxylate

→

Diethyl 2,6-diisopropyl-4-(4-fluorophenyl)-pyridine-3,5-dicarboxylate

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Waschensubsequently washed well with dichloromethane
2. 2
   SonstigeAfter concentration of the dichloromethane phase to a volume of approx. 800 ml, it is chromatographed on a column (2 kg of silica gel 70-230 mesh) with dichloromethane

Vorschrift

171.7 g (0.757 mol) of 2,3-dichloro-5,6-dicyano-p-benzoquinone is added to a solution of 304.8 g (0.757 mol) of the compound from Example VII in 2 l of dichloromethane, and the mixture is stirred overnight at room temperature. The mixture is drawn off by suction over diatomaceous earth and subsequently washed well with dichloromethane. After concentration of the dichloromethane phase to a volume of approx. 800 ml, it is chromatographed on a column (2 kg of silica gel 70-230 mesh) with dichloromethane.

Quelle