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To a mixture of 3.1 grams (0.02 mole) of n-heptyl isothiocyanate and 25 milliliters of benzene was added 1.77 milliliters (0.02 mole) of furfuryl amine. The mixture was refluxed for 30 minutes on a steam bath and then evaporated under vacuum to yield 1-n-heptyl-3-furfuryl thiourea. The product was cooled and 4.1 grams (0.02 mole) of bromoethylamine hydrobromide and 25 milliliters of ethanol 2B was added. The resulting mixture was refluxed on a steam bath overnight. The solid product was removed by filtration and air dried. A yield of 5.2 grams of solid, melting point 140°-145° C., was obtained. Structure of the product was confirmed by NMR.

1. temperatureThe mixture was refluxed for 30 minutes on a steam bath
2. customevaporated under vacuum