Patent ID: 7115748

Claim:
A method of making an imidazole-2-thione which comprises the steps of reacting a vicinal diamine having the formula I wherein R is selected from the group consisting of hydrogen, alkyl, alkenyl, alkoxy, carbocyclic aryl and heterocyclic aryl radicals and R 1 is selected from the group consisting of hydrogen, alkyl, alkoxy, carbocyclic aryl and heterocyclic aryl, radicals with a compound having a thiocarbonyl moiety to obtain a first reaction product having the general formula II reacting said first reaction product with R 3 —Cl to provide a second reaction product having the formula IV wherein R 3 is selected from the group consisting of allyl, benzyl, 2, 4 dimethoxybenzyl, 2-methoxy benzyl and acetoxy benzyl and oxidizing said reaction product to obtain an imidazole-2-thione having the formula III