HCID 131715636, compound → HCID 13727460, compound

Participants

Reaction Steps

275 g (1.25 moles) of 1-chloro-3,3-dimethyl-2-phenoxy-pent-1-en-4-ine in 1.25 liters of ethanol and 620 ml of concentrated hydrochloric acid are heated for 5 hours under reflux. The mixture is diluted with water and repeatedly extracted with n-hexane. After drying the extracts and stripping off the solvent, 176 g of crude product remain. Distillation gives 149.9 g (that is to say 83% of theory) of 1-chloro-3,3-dimethyl-pent-4-in-2-one of boiling point 67°-70° C./20 mm Hg.

Provenance & Evidence