Reaktion #1136152

Reaktionsgleichung

MeNH2

4-chloro 2,5-difluoro nitrobenzene

DIPEA

→

5-chloro-4-fluoro-N-methyl-2-nitroaniline

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe reaction was quenched with H2O
2. 2
   Extraktionextracted with EtOAc (3×30 ml)
3. 3
   WaschenThe combined organic layers were washed with brine
4. 4
   Trocknendried over Na2SO4
5. 5
   Einengenconcentrated under vacuum
6. 6
   Sonstigeto get crude product which
7. 7
   Sonstigewas purified column chromatography

Vorschrift

To a solution of 4-chloro 2,5-difluoro nitrobenzene (2.0 g, 0.010 mol) in DMF (15 ml) was added DIPEA (4.5 ml, 0.026 mol) followed by MeNH2 (5 ml, 0.010 mol, 2M in THF) and the resulting solution was stirred at room temperature for 12 h. The reaction was quenched with H2O and extracted with EtOAc (3×30 ml). The combined organic layers were washed with brine dried over Na2SO4 and concentrated under vacuum to get crude product which was purified column chromatography to get the title compound 5-chloro-4-fluoro-N-methyl-2-nitroaniline as a yellow solid, 1H NMR (400 MHz, DMSO-d6), δ: 8.20 (s, 1H), 8.09 (d, J=10 Hz, 1H), 7.22-7.20 (d, J=6.4 Hz, 1H), 2.95 (s, 3H). MS (M+1): 205.12

Quelle