1-ethyl-1-phenylthiourea

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

Procedure: When the reaction is carried out as described in Example 23 with the exception that instead of N-ethyl-N-phenylthiourea an equimolar amount of N-methyl-N-phenylthiourea is used, 3-methyl-2-iminobenzthiazoline melting at 122° C. is obtained in a yield of 95.6% and with an equally good purity.