Reaktion #1349656

Reaktionsgleichung

2-(4-chlorophenoxy-methyl)-2-tert.-butyl-oxirane

1,2,4-triazole

→

2-(4-chlorophenoxy-methyl)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)-butan-2-ol

Ausbeute 65.0%

Lösungsmittel

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   EinengenThe mixture was then concentrated
2. 2
   Temperaturthe solution heated
3. 3
   TemperaturThe solution was thereafter cooled in an ice bath
4. 4
   Filtrationthe solid material was filtered off under suction
5. 5
   Waschenwas washed with ethyl acetate
6. 6
   EinengenThe filtrate was concentrated
7. 7
   workup.DISSOLUTIONthe residue was dissolved in ether/hexane
8. 8
   workup.ADDITIONthe solution was treated with gaseous hydrogen chloride
9. 9
   FiltrationThe precipitate was filtered off under suction
10. 10
    Waschenwashed with ether
11. 11
    Sonstigethe free base was obtained by the addition of ethyl acetate/1 N sodium hydroxide solution

Vorschrift

72.15 g (0.3 mol) of 2-(4-chlorophenoxy-methyl)-2-tert.-butyl-oxirane and 24.15 g (0.35 mol) of 1,2,4-triazole were heated under refulx in 120 ml of ethanol for 48 hours. The mixture was then concentrated, and the residue was taken up in 200 ml of ethyl acetate and the solution heated. The solution was thereafter cooled in an ice bath, and the solid material was filtered off under suction and was washed with ethyl acetate. The filtrate was concentrated and the residue was dissolved in ether/hexane, and the solution was treated with gaseous hydrogen chloride. The precipitate was filtered off under suction and washed with ether, and the free base was obtained by the addition of ethyl acetate/1 N sodium hydroxide solution. 60.2 g (65% of theory) of 2-(4-chlorophenoxy-methyl)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)-butan-2-ol of melting point 84°-87° C. were obtained.

Quelle