1: 86 percent / potassium hydroxide / methanol / 24 h 2: 65 percent / triethylamine / acetonitrile / standing overnight 3: potassium hydroxide / ethanol / 1.5 h / Heating 4: H2O / Schotten-Baumann 5: potassium hydroxide / ethanol / 3 h / 180 °C / sealed tube 6: 59 percent / triethylamine / diethyl ether / 0.25 h View Scheme

1: 86 percent / potassium hydroxide / methanol / 24 h 2: 65 percent / triethylamine / acetonitrile / standing overnight View Scheme

1: 86 percent / potassium hydroxide / methanol / 24 h 2: 65 percent / triethylamine / acetonitrile / standing overnight 3: potassium hydroxide / ethanol / 1.5 h / Heating 4: H2O / Schotten-Baumann 5: potassium hydroxide / ethanol / 3 h / 180 °C / sealed tube 6: 59 percent / triethylamine / diethyl ether / 0.25 h 7: 80 percent / triethylamine / diethyl ether / standing overnight View Scheme