Water → HCID 178512780, compound

Participants

Reaction Steps

2-Phenylethylamine (8.49 g, 70.1 mmol) and S-methylisothiourea sulfate (9.43 g, 33.9 mmol) was dissolved in 100 ml destilled water. Air was passed over the reaction mixture and through 50% NaOH (500 ml) and then through 5% cuprous sulfate (250 ml). The reaction mixture was heated at reflux for 5 hours. Evaporation of the solvent yielded a white powder. The product was isolated by crystallisation from 96% ethanol, washed with cold acetone and diethyl ether and dried in a desicator. After three crystallisations, the product contained only minor amounts of starting material. The reaction yielded 61.5% (9.14 g) 2-phenylethylguanidine hemisulfate.

Provenance & Evidence