Hydrochloric Acid → 2-Cyclopenten-1-one, 2-pentyl-

Participants

Reaction Conditions

Reaction Steps

42.6 g of 2-(1-hydroxypentyl)-cyclopentanone were dissolved in 161.9 g of n-butanol and heated to 130° C. Then, 24.5 g (0.24 mol) of a 35% hydrochloric acid were added dropwise thereto for 30 minutes at the same temperature. After the dropping addition was finished, the resultant mixture was stirred for 2 hours under heating at the same temperature. After the reaction was finished, the mixture was cooled to the room temperature and neutralized with an aqueous solution of sodium hydroxide. Then, the resultant organic layer was analyzed in the same manner as in Example 8. As the result, 22.9 g of 2-pentyl-2-cyclopentenone were obtained (yield: 60.0%).

Provenance & Evidence