p-Toluenesulfonic acid → HCID 86743282, compound

Participants

Reaction Steps

A solution of t-butyl 2-bromo-7-phenyl-(2E)-hepten-6-ynoate (1.5 g, 4.48 mmol) and 4-toluenesulphonic acid (0.1 g) in dry benzene (15 ml) was heated under reflux under dry nitrogen for 2 hours. The cooled mixture was diluted with ether and the organic phase was extracted with aqueous sodium bicarbonate. The aqueous phase was acidified and extracted with ether. The organic phase was washed with brine and dried over magnesium sulphate. The solvents were removed to give 0.95 g (76% of theory) of 2-bromo-7-phenyl-(2E)-hepten-6-ynoic acid as a colourless solid.

Provenance & Evidence