Table 2.

Synthesis of higher carboxylic acids using various ether substrates.

Reaction conditions: 20 μmol IrI₄, 2 mmol LiI, 0.6 mL AcOH, 2.45 mmol substrate, 5 MPa CO₂ (68 mmol) and 2 MPa H₂ (at room temperature), 170 °C, 16 h

^aYield denotes 100 × moles of products per mole of ether feedstock

^b1.23 mmol substrate was used because there are two alkyl groups in each molecule

^c1.5 mmol substrate was used because of the large molar volume