ortho-methylbenzoic acid T=200°C; 1 h;

1: NEt3 / 12 h / Ambient temperature 2: 1) C6H5-CO-COO-C4H9, CuI / 1) C6H6, 110 deg C, 40 h, 2) 150 deg C 3: 65 percent / o-CH3-C6H4-COOH / 1 h / 200 °C View Scheme

1: 1) C6H5-CO-COO-C4H9, CuI / 1) C6H6, 110 deg C, 40 h, 2) 150 deg C 2: 65 percent / o-CH3-C6H4-COOH / 1 h / 200 °C View Scheme