Hydrochloric Acid → HCID 23329521, compound

Participants

Reaction Steps

A suspension of 5 gm. of 1-(2-bromoethyl)-3-nitro-4-pyrazolecarboxamide in 100 ml. of 5 percent Na2CO3 solution was refluxed with stirring for 5 hours. The mixture was cooled in an ice bath and acidified to ph 2 with concentrated HCl. The product precipitated and was separated by filtration. The solids were washed with cold water and recrystallized from methanol-water to product 2 gm. of 3-nitro-1-vinyl-4-pyrazolecarboxamide, m.p. 150°-52° C.

Provenance & Evidence