1: 1-(2-hydroxy-5-methyl-3-nitro-phenyl)-ethanone With sodium ethanolate in ethanol 0.5 h; 2: oxalic acid diethyl ester in ethanol Claisen condensation; 2 h; Heating;

1.1: 63 percent / glacial acetic acid; nitric acid / 15 - 20 °C 2.1: sodium ethoxide / ethanol / 0.5 h 2.2: 86 percent / ethanol / 2 h / Heating View Scheme