Hydrochloric Acid → HCID 54133002, compound

Participants

Reaction Steps

70.2 g (409.7 mmol) of a-bromopropionic acid chloride is added in drops at 0° C. to 40 g (341.4 mmol) of valine and 103.7 g (1024 mmol) of triethylamine in 600 ml of methylene chloride. In this case, the temperature remains between 0° C.-5° C. 1000 ml of 5% aqueous hydrochloric acid is added, and the organic phase is separated. The organic phase is extracted once more with 500 ml of 5% aqueous hydrochloric acid, dried on magnesium sulfate and evaporated to dryness in a vacuum The residue is recrystallized from acetone/diisopropyl ether.

Provenance & Evidence