1: 63 percent / p-TsOH / benzene / 6 h / Heating 2: 39 percent / hydroxylamine hydrochloride / pyridine / 1 h / 130 °C 3: 68 percent / Et3N / benzene / 1 h / 80 °C 4: 75 percent / hydrolysis View Scheme

1: 39 percent / hydroxylamine hydrochloride / pyridine / 1 h / 130 °C 2: 68 percent / Et3N / benzene / 1 h / 80 °C 3: 75 percent / hydrolysis View Scheme

1: 68 percent / Et3N / benzene / 1 h / 80 °C 2: 75 percent / hydrolysis View Scheme

hydrolysis;