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

Participants

Reaction Conditions

Reaction Steps

5.44 g (0.058 mol) of 3-picoline and 5.54 g (0.053 mol) of a 35% hydrochloric acid were mixed with 100.0 g of 2-ethylhexanol and heated to 140° C. Then, 100.0 g (0.53 mol) of 2-pentylidene cyclopentanone were added dropwise thereto for 2 hours at the same temperature. After this 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 1. As the result, 69.2 g of 2-pentyl-2-cyclopentenone were obtained (yield: 86.0%).

Provenance & Evidence