2-(2-Chloro-ethoxy)-6-nitro-phenylamine → 2-(2-Chloro-ethoxy)-4-chloro-6-nitro-phenylamine

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Reaction Steps

A solution of 2-(2-chloro-ethoxy)-6-nitro-phenylamine (2a, 30.0 g, 0.14 mol), N-chlorosuccinamide and acetonitrile (1.3 L) was refluxed for 4 hr. The mixture was concentrated under vacuum and the residue was diluted with ethyl acetate (500 mL). The organic layer was washed with water (2X, 250 mL) and brine (250 mL), dried over anhydrous magnesium sulfate, filtered, and the solvent removed under vacuum to give an orange solid residue. Crystallization from ethyl acetate-hexane gave 33.5 g (95.3%) as orange solid, mp 109-110° C.; MS EI m/e 250/252/254 (M+).

Provenance & Evidence