反应详情

A 500 mL round-bottomed flask equipped with a condenser was charged with 2,4,6-triphenyl-pyrylium tetrafluoroborate (22.4 g, 0.056 mole), aniline (5.8 g, 0.060 mole) and ethanol (200 mL). The resulting solution was magnetically stirred and refluxed under a nitrogen atmosphere for 6 hours. The solution was cooled to room temperature, and the product 27 precipitated as greenish-yellow, crystalline solid. The product was collected by filtration and dried in a vacuum oven at 100° C. (23 g, 87% yield). Mp=253° C.

1. customA 500 mL round-bottomed flask equipped with a condenser
2. temperaturerefluxed under a nitrogen atmosphere for 6 hours
3. customthe product 27 precipitated as greenish-yellow, crystalline solid
4. filtrationThe product was collected by filtration
5. customdried in a vacuum oven at 100° C. (23 g, 87% yield)