Reaktion #569713

Reaktionsgleichung

N-methyl-4-acetoxy-2,3,5-trimethyl-6-nitroaniline

hydrogen

→

title compound

Ausbeute 55.7%

4-Acetoxy-N-Methyl-3,5,6-trimethyl-1,2-phenylene-diamine

Ausbeute 55.7%

Lösungsmittel

ethanol

ethyl acetate

Reaktionsbedingungen

Aufarbeitung

1. 1
   FiltrationAt the end of this time, the reaction mixture was filtered
2. 2
   Sonstigeto remove the platinum oxide
3. 3
   workup.DISTILLATIONthe filtrate was freed from the solvent by distillation under reduced pressure
4. 4
   SonstigeThe resulting residue was purified by column chromatography through silica gel
5. 5
   workup.ADDITIONby volume mixture of ethyl acetate and hexane as the eluent

Vorschrift

A solution of 2.65 g of N-methyl-4-acetoxy-2,3,5-trimethyl-6-nitroaniline [prepared as described in step (i) above] in a mixture of 20 ml ethanol and 20 ml of ethyl acetate was shaken at room temperature for 3.5 hours and then at 40° C. for 3 hours in an atmosphere of hydrogen and in the presence of 0.2 g of platinum oxide. At the end of this time, the reaction mixture was filtered to remove the platinum oxide and the filtrate was freed from the solvent by distillation under reduced pressure. The resulting residue was purified by column chromatography through silica gel, using a 1:1 by volume mixture of ethyl acetate and hexane as the eluent, to give 1.3 g of title compound, melting at 113°-116° C.

Quelle