反应条件
1: 96 percent / KOH / 0.25 h / Heating
2: 97 percent / 2 N NaOH / ethanol / 1 h / 5 - 10 °C
3: 63 percent / 18 percent HCl / 0.17 h / Heating
4: 49 percent / 10 percent sodium methanolate / methanol / 0.5 h / Ambient temperature
5: 78 percent / triethylphosphite / 20 h / Heating
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