反应条件
1: 90 percent / PdCl2(PPh3)2 / 2 h / Heating
2: 1.) 3 N aq. HCl / 1.) THF, 25 deg C, 2 h, 2.) m-xylene, reflux, 24 h
3: 2 percent aq. NaOH / methanol / 0.75 h / 25 °C
4: 1.) CpCo(CO)2, 2.) CsF / 1.) THF, reflux, irradiation, 2.) DMSO, 79-80 deg C, 3 d
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