Reaktion #630248

Reaktionsgleichung

hydroxylamine hydrochloride

α-tetralone

Tellurium dioxide

hydrochloric acid

→

3-Chloronaphth[2,1-c]-1,2,5-oxatellurazole

Lösungsmittel

ethyl alcohol

ethyl alcohol

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONwas added
2. 2
   workup.DISSOLUTIONWhen all solid was dissolved
3. 3
   Sonstigeto form within an hour
4. 4
   Sonstigethe product was isolated by room temperature
5. 5
   Sonstigethe product was isolated by filtration
6. 6
   Sonstigedried in a vacuum

Vorschrift

Tellurium dioxide (80 g, 0.5 mole) was dissolved in concentrated hydrochloric acid (200 ml, 2.0 moles) with stirring. When solution was complete, a suspension of hydroxylamine hydrochloride (69 g, 1.0 mole) in ethyl alcohol (300 ml) was added. When all solid was dissolved, α-tetralone (73 g, 0.5 mole) in ethyl alcohol (1200 ml) was added. The clear reaction mixture rapidly turned red and dark crystals began to form within an hour. After the reaction mixture had been kept five days at room temperature, the product was isolated by room temperature, the product was isolated by filtration and dried in a vacuum. Yield 123.2 g.

Quelle