P-Toluic Acid → Carbon Dioxide

Participants

Reaction Steps

The reaction was conducted in the same manner as in Example 16 except that a product formed by charging 0.42 g of ruthenium chloride, 4.78 g of the deficient silicotungstate (K8 [SiW11O39 ].13H2O) obtained in Example 1 and 150 ml of water into a reactor at the same time (ruthenium concentration 1,000 ppm, a molar ratio of ruthenium to heteropoly-acid salt=1:1) was used as a catalyst. Consequently, the conversion of p-toluic acid was 75%. The selectivity for terephthalic acid relative to p-toluic acid reacted was 72%. As the other products, carbon dioxide and 4-carboxybenzaldehyde were formed in the selectivities of 27% and 1% respectively.

Provenance & Evidence