反应条件
1: 93 percent / K2CO3, Cu / dibutyl ether / 24 h / Heating 2: 81 percent / NH2OH*HCl, pyridine / ethanol / 0.5 h / Heating 3: 87 percent / NaOH / H2O / 16 h / Heating 4: 1.) CDI / 1.) THF, r.t., 1 h, 2.) THF, light petroleum, 0-5 deg C, 4 h 5: 12 percent / various solvent(s) / 1 h / Heating View Scheme
