2-Methyl-2-thiopseudourea sulfate → HCID 178513174, compound

Participants

Reaction Steps

17.9 g (0.089 mol) of 2 guanidino-4-thiazole carboxylic acid hydrazide was combined with 24.9 g of 2-methyl-2-thiopseudourea sulfate (0.089 mol) and heated rapidly to reflux in 125 ml dimethylsulfoxide. The reactants dissolved and within 5 minutes reflux a heavy precipitate formed. Reflux was continued for a total of 30 minutes. The reaction was cooled and the resulting heavy precipitate was isolated by filtration and washed with a small portion of dimethylsulfoxide followed by washing with isopropyl alcohol and ether. The resulting solid was dried in vacuo to give 34.6 g of 2-guanidino-4-thiazole carboxylic acid 2-amidinohydrazide containing some occluded dimethylsulfoxide.

Provenance & Evidence