反应条件
1: 2,2,6,6-tetramethyl-1-piperidinyloxy, free radical; sodium hypochlorite; sodium hydrogencarbonate / toluene / 0 °C 2: triethylamine / toluene / 2 h / 0 - 20 °C 3: phosphoric acid / 65 - 75 °C 4: N-ethyl-N,N-diisopropylamine / 1-methyl-pyrrolidin-2-one / |Heating View Scheme
