Ethanol → Ethyl 2-methyl-4-pentenoate

Participants

Reaction Steps

The autoclave is then opened and 12.6 g sodium bicarbonate is added to the reaction mass in order to neutralize the phosphoric acid. 30 g Primol (a registered trademark for mineral oil manufactured by the Exxon Co. of Linden, N.J.) is then added as a still base, and the reaction mass is fractionally distilled on a 1 inch × 20 inch packed Goodloe distillation column (i) at atmospheric pressure and 129° C (yielding a mixture of ethanol and ethyl propionate (245 g) and (ii) at 40 mm Hg. pressure and 75° C (yielding 264 g of ethyl-2-methyl-4-pentenoate. Yield, based on triethyl orthopropionate used, 73.5%.

Provenance & Evidence