Sulfuric Acid → N,N-Bis(2-methylphenyl)thiourea

Participants

Reaction Steps

In accordance with the process of Example 1 except using 107.2 g of o-toluidine, 250 ml of o-chlorotoluene, 51.6 g of conc. sulfuric acid and 87.5 g of ammonium thiocyanate and reacting them at 90° to 100° C. for 10 hours to obtain o-tolylthiourea having a purity of 95.8% (4.0% of N,N-di-o-tolylthiourea) in an yield of 70.6% as a pure product. The separation of ditolylthiourea was not satisfactory and the yield was low.

Provenance & Evidence