Reaktion #96186

Reaktionsgleichung

2,6-dimethylphenylhydrazine hydrochloride

sodium carbonate

chloroformic acid 2-chloroethylester

→

2-Chloroethyl 2-(2,6-dimethylphenyl)-hydrazinecarboxylate

Lösungsmittel

water

water

xylene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturcooled to 5°
2. 2
   Temperaturthe temperature being maintained at 5°
3. 3
   workup.ADDITIONare added
4. 4
   Sonstigethe precipitate thus formed
5. 5
   Filtrationfiltered off
6. 6
   Waschenwashed with water
7. 7
   Sonstigedried

Vorschrift

A mixture of 17.7 g (0.1 mol) 2,6-dimethylphenylhydrazine hydrochloride, 21.2 g (0.2 mol) sodium carbonate in 50 ml water and 50 ml xylene are stirred for 30 minutes at room temperature, then cooled to 5°. 14.3 g (0.1 mol) chloroformic acid 2-chloroethylester is then added over a period of 1 hour, the temperature being maintained at 5°. The mixture is stirred at 5° for another hour, at the end of which 100 ml water are added, the precipitate thus formed filtered off, washed with water and dried. Further work-up as in Example 1b.

Quelle