N-(4-chloro-2-fluoro-5-nitrophenyl)acetamide → N-(5-amino-4-chloro-2-fluorophenyl)acetamide

HRID 1788777Notes

Reaction equation

[C:1]([NH:4][C:5]1[C:10]([F:11])=[CH:9][C:8]([Cl:12])=[C:7]([N+:13]([O-])=O)[CH:6]=1)(=[O:3])[CH3:2]>C(O)(=O)C.C(OCC)(=O)C.[Fe]>[C:1]([NH:4][C:5]1[C:10]([F:11])=[CH:9][C:8]([Cl:12])=[C:7]([NH2:13])[CH:6]=1)(=[O:3])[CH3:2]

Participants

Conditions

Temperature: 90 °C

Procedure

Iron powder (31.9 g) were suspended in a 5% acetic acid solution (60 ml), and the suspension was heated to 90° C. A solution of 4-(N-acetylamino)-1-chloro-5-fluoro-2-nitrobenzene (13.3 g) in acetic acid (100 l ml) and ethyl acetate (70 ml) was dropwise added thereto, and the resultant mixture was refluxed at 80° C. for 2 hours. The reaction mixture was filtered by celite. The filtrate was extracted with ethyl acetate, and the extract was neutralized with a saturated sodium hydrogen carbonate solution. The organic layer was washed with water, dried and concentrated under reduced pressure to give 7.0 g of 4-(N-acetylamino)-2-amino-1-chloro-5-fluorobenzene. M.P., 140.5°-141.5° C.

Workup

filtrationThe reaction mixture was filtered by celite
extractionThe filtrate was extracted with ethyl acetate
washThe organic layer was washed with water
customdried
concentrationconcentrated under reduced pressure

Sources & evidence

ORD record: ord-c23a4513b82d45e09e99a39aac139faa
Source dataset: uspto-grants-1987_08
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04684397

Reaction notes

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