反应详情

5-Bromo-1-napthoic hydrazide (D2) (2.00 g, 7.5 mmol) was stirred at reflux under Ar in triethyl orthoacetate (20 ml) for 20 h. The mixture was cooled in ice, and the solid was filtered off, washed with petroleum ether (b.p. 60-80° C.), and dried in vacuo at 60° C., giving the title compound (1.92 g, 88%) as a light brown powder.

1. temperatureThe mixture was cooled in ice
2. filtrationthe solid was filtered off
3. washwashed with petroleum ether (b.p. 60-80° C.)
4. customdried in vacuo at 60° C.