Hydrochloric Acid → HCID 67119420, compound

Participants

Reaction Conditions

Reaction Steps

An iron powder (372.9 g), 1290 ml of ethanol, 531 ml of water, and 2.8 g of a 35% hydrochloric acid were charged into a 2000-ml glass flask equipped with a stirring device, a thermometer, and a reflux condenser, and the mixture was heated to reflux. Isopropyl 4-methyl-2-nitro-5-(4-(trifluoromethoxy)phenoxy)benzoate (373 g) dissolved in 398 ml of ethanol was added dropwise thereto over a period of two hr. After reflux for 8 hr, 10 ml of a saturated aqueous sodium bicarbonate solution was added, and the mixture was filtered. The filtrate was concentrated, and 300 ml of ethyl acetate was added to the residue. The mixture was washed with brine, followed by separation. The ethyl acetate layer was concentrated under the reduced pressure. Isopropanol (320 ml) was added to the residue, and the mixture was heated at 70° C. for dissolution. Water (160 ml) was added to the solution to cool the solution. The precipitated solid was collected by filtration and was dried to give isopropyl 2-amino-4-methyl-5-(4-(trifluoromethoxy)phenoxy)benzoate (283.7 g, yield: 82.2%).

Provenance & Evidence