Hydrochloric Acid → HCID 10657374, compound

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Reaction Steps

1.2 G. of 2-amino-4-(4-chlorophenoxy)-1-nitrobenzene in 3ml. concentrated hydrochloric acid is treated with a solution of 6 g. stannous chloride in 3 ml. concentrated hydrochloric acid. The mixture is heated briefly (about ten minutes) on a steam bath, then cooled and treated with potassium bicarbonate and chloroform. The chloroform layer is removed from the filtered mixture, dried and evaporated. 1,2-diamino-4-(4-chlorophenoxy)benzene is isolated as a gum. 1G. of 1,2-diamino-4-(4-chlorophenoxy)benzene in 20 ml. acetone is treated overnight at room temperature with 2.5 g. methoxy carbonyl isothiocyanate. The mixture is concentrated under vacuum and the residue triturated with methanol. Recrystallization from methanol gives pure 1,2-bis-(3-methoxycarbonyl-2-thioureido)-4-(4-chlorophenoxy)benzene.

Provenance & Evidence