Iodine → 1-(But-3-en-1-yl)-4-nitrobenzene

Participants

Reaction Steps

A mixture of 52.1 g of sodium iodide, 300 ml of acetone and 28.6 g of 1-(3,4-dibromobutyl)-4-nitrobenzene was stirred under reflux for 3.5 hours. After cooling the brown suspension was freed from solvent in vacuo and the brown residue was taken up in diethyl ether and water. The separated iodine was reduced by adding solid sodium thiosulphate. The colourless ether solutions were washed with water, dried with sodium sulphate and concentrated in vacuo. The residue (14.9 g) was distilled in a high vacuum, whereby 13.4 g of 1-(3-butenyl)-4-nitrobenzene were obtained as an almost colourless liquid; b.p. 86°-89° C./0.2 Torr.

Provenance & Evidence