Methane → HCID 19378735, compound

Participants

Reaction Steps

An intimate mixture of 5 g of 3-aminopyridine-2- sulfonamide (Preparation 1) and 1.91 g of urea is progressively brought to a temperature of 200° C. (melting). After gas has ceased to be given off and the mass has solidified, the reaction mixture is cooled to ambient temperature. The solid mass is redissolved in 1N NaOH and the solution obtained, optionally decolored with absorbing charcoal, is then adjusted to a pH of 2 using 1N HCl. The white precipitate corresponding to the title compound is collected on a filter, washed with water and dried.

Provenance & Evidence