Iodoethane → HCID 14692897, compound

Participants

Reaction Conditions

Reaction Steps

Potassium carbonate (36 g, 0.26 moles) was added to a stirred mixture of 3,5-dichloro-4-fluorobenzoic acid (27.6 g, 0.13 moles), ethyl iodide (41.2 g-0.26 moles) and dry dimethylformamide (300 ml) under nitrogen. The reaction was heated to 80° C. for 6 hours. The dimethylformamide was removed in vacuo and the residue treated with water (200 ml) acidified with dilute hydrochloric acid and extracted with ethylacetate (2×250 ml). The organic layer was washed with water, dried over magnesium sulphate and evaporated in vacuo, to give an orange oil which was purified by chromatography on silica, using a 4:1 mixture of petrol and diethylether as eluent. The pink oil obtained crystallised on standing, and washing with ice-cold 40-60 petrol gave white crystals of ethyl 3,5-dichloro-4-fluorobenzoate (29 g).

Provenance & Evidence