(2-phenylphenyl)thiourea

Conditions: temp:0.00; pressure:0.00; stir:

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: A suspension of N-(2-biphenylyl)thiourea (7.8 g) in water (60 ml) was reacted with a solution of potassium hydroxide (19.15 g) in water (60 ml), lead acetate trihydrate (12.96) in water (60 ml) was added and the reaction mixture heated at 90°-95° C. for 30 minutes and filtered. The filtrate was acidified with acetic acid with cooling to yield 2-biphenylylcyanamide as a colourless solid (m.p. 85°-87° C.). was added the reaction mixture heated at 90°-95° C. for 30 minutes filtered with cooling

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

Procedure: Reaction of 2-biphenylyl isothiocyanate (9.1 g) in ethanol (25 ml) with 25% aqueous ammonia solution (50 ml) at ambient temperature for 18 hours gave N-(2-biphenylyl)thiourea (m.p. 187°-188° C.).

Conditions: temp:55.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of N-(2-biphenylyl)thiourea (9.6 g), methyl iodide (2.9 ml) and acetone (100 ml) was heated at 55° C. for 3 hours to yield 1-(2-biphenylyl)-2-methyl-2-thiopseudourea hydriodide.

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

Procedure: Treatment of 2-biphenylylisothiocyanate (10.2 g) with a saturated solution of ammonia in ethanol (100 ml) at 10 to 30° for 4 hours and then at 30° C. for 16 hours yielded N-(2-biphenylyl)thiourea (m.p. 183°-184° C.).