反应条件
1: 1.) conc. hydrochloric acid, sodium nitrite, 2.) stannous chloride, hydrochloric acid / 1.) 5-10 deg C, 1 h, 2.) room temperature, 45 min 2: 96 percent / ethyldiisopropylamine / tetrahydrofuran / 1.25 h / 5 °C 3: 1.) ethyl acetate, 0.5 h, 2). 1 h 4: 70 percent / sodium hydroxide / ethanol; H2O / 3.5 h / Heating View Scheme
参考文献
Pilgram, K. H.
Synthetic Communications, 1985 , vol. 15, # 8 p. 697 - 706
