sodium hydroxide T=195°C; P=12929 Torr; 2 h;

1: (NH4)2CO3 / ethanol; water / 2 h / 20 - 150 °C / |Inert atmosphere; |Microwave irradiation 2: sodium hydroxide / 2 h / 195 °C / 12929 Torr View Scheme

1: perchloric acid / water / 6 h / 20 °C 2: N-ethyl-N,N-diisopropylamine; 2,6-dimethylpyridine; bis(trichloromethyl) carbonate / dichloromethane / 18 h / 20 °C 3: QP-SA / dichloromethane / 20 h / 18 °C View Scheme

in tetrahydrofuran; 1,4-dioxane Heating;