1: With methanesulfonic acid; phosphorous pentoxide in acetonitrile T=25 - 40°C; 21 h; 2: With water; sodium hydroxide in acetonitrile T=90°C; 7 h; Reagent/catalystTimepH-valueTemperature;

1: With methanesulfonic acid; phosphorous pentoxide in acetonitrile T=25 - 30°C; 2 h; 2: With water; sodium hydroxide T=25°C; SolventTimeTemperatureReagent/catalyst;