1: 10percent KOH / methanol / 2 h / Ambient temperature 2: 120 mg / piperidine / benzene / 4 h / Ambient temperature 3: 17 percent / pyridinium dichromate, pyridinium trifluoroacetate / CH2Cl2 / 2 h / Ambient temperature 4: 50 percent / 40percent methylamine / benzene; H2O / 0.08 h / Ambient temperature View Scheme

potassium hydroxide in methanol 2 h; Ambient temperature;

potassium carbonate in methanol Ambient temperature; Yield given. Yields of byproduct given;