A solution of 2,2'-dithiobisbenzoyl chloride (1.20 g, 3.50 mmol) in 25 mL of dichloromethane was added to a solution of 4-tert-butylaniline (1.04 g, 6.99 mmol) in 8 mL of pyridine at 23° C. The reaction mixture was stirred for 18 hours at 23° C. under nitrogen atmosphere. The mixture was concentrated, the residue triturated with 5% aqueous HCl, and the resulting solid was collected by filtration and washed with water to yield the crude product. The crude material was recrystallized from ethyl ether-ethanol to yield 0.24 g of the title compound, mp 135°-138° C.
