Sulfuric Acid → 4-Methoxybenzaldehyde

Participants

Reaction Steps

In this example an undivided cell was used, said cell being provided with a platinum anode and a lead cathode. A solution of 250 grams of water, 10 grams of sulfuric acid and 50 grams of manganous sulfate was placed in the cell and 50 grams of p-methoxytoluene slowly added thereto. The electrical energy which was used consisted of an E applied voltage of 5.5 volts along with about 4.0 amps while maintaining the current density at a rate of about 80 milliamps/cm2. The reaction was effected for a period of about 3.5 hours while maintaining the cell at ambient temperature and atmospheric pressure. A work-up of the results disclosed that there had been a 47.1% yield of anisaldehyde with a 50.5% selectivity to said aldehyde, a current efficiency of 93.3% being observed.

Provenance & Evidence