Hydroquinone → Durohydroquinone

Participants

Reaction Steps

Into an autoclave (inner volume: 4.5 ml, made of SUS 316, without manometer) were charged 0.016 g of hydroquinone, 1.355 g of methanol and 2.5 mg of calcium oxide (manufactured by Wako Pure Chemical Ind., Ltd.). The reaction was started by elevating the temperature up to425° C. with sand bath. After 8 minutes, the autoclave was quickly cooled and the reaction solution was taken out from the autoclave when the temperature was cooled back to the room temperature. The measurement according to the process described above revealed that the conversion of hydroquinone was 87% by mole, the selectivity of monomethylhydroquinone was 30% by mole, the selectivity of dimethylhydroquinone was 42% by mole and the selectivity of trimethylhydroquinone was 18% by mole. As byproducts, tetramethylhydroquinone was produced with a selectivity of 3% by mole.

Provenance & Evidence