HCID 21545736, compound → HCID 21545727, compound

Participants

Reaction Steps

6-Chloro-5-methylamino-1-methylindazole-4,7-dione (4.5 grams) in 30 % hydrochloric acid (50 milliliters was stirred at 0° C and treated dropwise with a solution of sodium nitrite (3.0 grams) in water (20 milliliters). After 1 hour the orange solid which had separated out was collected, washed with water and dried over silica gel to yield the desired product having a melting point of 124°-125° C (with decomposition).

Provenance & Evidence