Reaktion #82675

Reaktionsgleichung

3,4-bis(trifluoromethyl)nitrobenzene

SnCl2

→

oil

Ausbeute 99.5%

3,4-Bis(trifluoromethyl)aniline

Ausbeute 99.5%

Lösungsmittel

ethanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeIt was evaporated to dryness
2. 2
   workup.ADDITIONthe residue was treated with 1N NaOH to pH=13
3. 3
   ExtraktionThe mixture was extracted by CHCl3 (4×8 mL)
4. 4
   TrocknenThe extract was dried (MgSO4)
5. 5
   Sonstigeevaporated

Vorschrift

A mixture of 261 mg (1.00 mmol) of 3,4-bis(trifluoromethyl)nitrobenzene and 989 mg (5.23 mmol) of SnCl2 in 6 mL of ethanol was heated at 70° C. for 2 h. It was evaporated to dryness and the residue was treated with 1N NaOH to pH=13. White precipitate was observed. The mixture was extracted by CHCl3 (4×8 mL). The extract was dried (MgSO4) and evaporated to leave 228 mg (99%) of oil. 1H NMR (CDCl3), 4.167 (sb, 2), 6.803 (d, 1, J=7.41), 7.026 (s, 1), 7.579 (d, 1, J=8.58). 19F NMR (CDCl3), 55.014 (q, 3), 56.919 (q, 3).

Quelle