Hydrochloric Acid → HCID 20315344, compound

Participants

Reaction Steps

To 9.4 g (0.248 mole) of lithium aluminum hydride in 600 ml of THF is slowly added, at less than 10°, 46.0 g of the crude α-(2,4-dichlorobenzyl) hexanoic acid. The reaction is allowed to stir, and slowly warm up to ambient temperature. After 2 hours, the slurry is heated to reflux and held there for 16 hours. At the end of this period, the reaction is cooled and carefully poured into ice water to decompose the excess LiAlH4. The mixture is then made acidic by treatment with concentrated hydrochloric acid. The ether solution is separated, and the aqueous phase is extracted three times with 200 ml of ether. The extracts and the ether solution are combined and washed with 100 ml of dilute sodium bicarbonate solution and then with 100 ml of water. The solution is dried over anhydrous magnesium sulfate and the ether is stripped off to give 35.9 g of the crude alcohol product. Distillation (86.8°/.15 mm) provides 34.2 g (93%) of pure alcohol. The material is identified by ir and its purity is determined by glc.

Provenance & Evidence