1: polyphosphoric acid trimethyl silyl ether (PPSE) / nitromethane / 2 h / 130 °C 2: 68 percent / 10percent Pd/C / bis-(2-methoxy-ethyl) ether / 24 h / Heating View Scheme

With  polyphosphoric acid trimethyl silyl ether in  nitromethane T=130°C; 2 h;  Yield given;