1-Methylpiperazine → HCID 178480777, compound

Participants

Reaction Steps

To a stirred suspension of 10.7 g of 3-chloro-2H-1,2,4-benzothiadiazine 1,1-dioxide in 100 ml of methanol is added 9.9 g of 1-methylpiperazine and the mixture is heated under reflux for 2 hours. After cooling, the crystalline precipitate is collected by suction filtration and recrystallized from a mixture of dimethylformamide and water to give 10.0 g of the desired product, m.p. 265°-267° C.

Provenance & Evidence