反应条件
1: 58 percent / NaH / dimethylformamide / 2 h / 0 °C 2: 1) NaH / 1) DMF, 0 deg C, 60 min, 2) DMF, 0 deg C, 0.5 h 3: 60 percent / polyphosphoric acid / 0.5 h / 180 °C 4: 90 percent / H2 / Pd/C / methanol / 5 h / Ambient temperature View Scheme
参考文献
Tetrahedron, , vol. 54, # 10 p. 2269 - 2274
