Reaktion #1158968

Reaktionsgleichung

cyclohexane-1,3-dione mono-(4-chlorophenyl) hydrazone

Cyclohexane-1,3-dione mono-(4-chlorophenyl)hydrazone

trifluoroacetic acid

→

title product

Ausbeute 42.0%

6-Chloro-4-oxo-1,2,3,4-tetrahydrocarbazole

Ausbeute 42.0%

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturcooled to room temperature
2. 2
   Filtrationfiltered
3. 3
   SonstigeThe filtercake is dried
4. 4
   Sonstigerecrystallized from ethanol/water

Vorschrift

A mixture of cyclohexane-1,3-dione mono-(4-chlorophenyl) hydrazone (45 mmol) obtained in Example 131 and trifluoroacetic acid (30 mL) is heated to 80° C. for 16 h, cooled to room temperature, poured over ice water and filtered. The filtercake is dried and recrystallized from ethanol/water to afford the title product, 4.2 g (42% yield), identified by HPLC and mass spectral analyses.

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