反应详情

A 1 L round-bottom flask equipped with a condenser was charged with 2,4,6-triphenyl-pyrylium tetrafluoroborate (50.0 g, 0.126 mole), 4-phenoxyaniline (25.7 g, 0.138 mole) and ethanol (400 mL). The resulting solution was magnetically stirred and refluxed under nitrogen atmosphere for 6 hours. The solution was cooled to room temperature, the condensation product precipitate out as cream color crystal. The crystal was collected by filtration and dried in vacuum oven (100° C.) to give the desired product (68 g, 95% yield). Mp=201.7 C

1. customA 1 L round-bottom flask equipped with a condenser
2. temperaturerefluxed under nitrogen atmosphere for 6 hours
3. filtrationThe crystal was collected by filtration
4. customdried in vacuum oven (100° C.)