反应详情

To a solution of 0.400 g. of hydroxylamine hydrochloride in 15 ml. of methanol, 0.400 g. of 1-methyl-2-nitro-5-imidazolcarboxaldehyde in 20 ml. of ethanol and 0.810 ml. of triethylamine are added at room temperature. After standing overnight, the solution is concentrated to a small volume and the solid which precipitates is collected on the filter. After crystallization from water, 0.10 g. of the title compound is obtained which melts at 203°-205° C.

1. concentrationthe solution is concentrated to a small volume
2. customthe solid which precipitates
3. customis collected on the filter
4. customAfter crystallization from water, 0.10 g