N-[(4-methylphenyl)methyl]cyclopentanamine

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 14 g of phenyl isothiocyanate in 50 ml of hexane was added dropwise to 19 g of N-4-methylbenzyl-N-cyclopentyl amine in 400 ml of hexane while cooling and stirring. After the addition, the temperature of the reaction mixture was gradually raised, and the solution was stirred at 40° C. for about 5 hours. The mixture was cooled and filtered. The residue was recrystallized from a mixture of hexane and ethyl alcohol. 30 g of N-4-methylbenzyl-N-cyclopentyl-N'-phenylthiourea were obtained. Melting point: 109°-111° C. while cooling After the addition the temperature of the reaction mixture was gradually raised the solution was stirred at 40° C. for about 5 hours The mixture was cooled filtered The residue was recrystallized from a mixture of hexane and ethyl alcohol