反应详情

温度

90 °C

60.8 g of 3-(2-chlorophenyl)-4-cyanopyrrole, 9.9 g of paraformaldehyde and 0.8 g of triethylamine are thoroughly mixed and and the mixture is then heated, with stirring, at a bath temperature of 90° C. The resultant melt is cooled to room temperature after 11/4 hours, when it congeals to a glass-like solid. Recrystallisation from toluene yields the title compound in the form of brownish crystals of m.p. 94°-97° C.

1. temperaturethe mixture is then heated
2. temperatureThe resultant melt is cooled to room temperature after 11/4 hours, when it
3. customRecrystallisation from toluene