Derivatives of 4-Trichloromethylbenzoyl Chloride (X1)-4-Trichloromethylbenzanilide (VZd)-A solution of XI and aniline in tetrahydrofuran gave VId; IR (mineral oil): 3310 and 1650 cm-1. 4'-Nitro-4-trichloromethylbenzanilide (VIe)-A solution of XI, 4nitroaniline, and triethylamine in acetonitrile gave VIe; IR (mineral oil): 3390 and 1670 cm-'. S-(Phenyl)-4-trichloromethyl Thiolbenzoate (VZf)-A solution of XI, thiophenol, and triethylamine in tetrahydrofuran gave VIf; IR (mineral oil): 1660 cm-'. S-(4-Acetamidophenyl)-4-trichloromethyl Thiolbenzoate (VZg)-A solution of XI, 4-acetamidothiophenol, and triethylamine in tetrahydrofuran gave VIg; IR (mineral oil): 3250 and 1660 cm-'. a-Disulfones a n d Thiolsulfonates-Bis(4-acetylaminophenyl Sulfone) (VIZIa)-This was prepared (30) from 4-acetamidophenyl sulfinic acid and potassium permanganate, mp 245' [lit. (30) mp 245-250" dec.]. Bis(4-aminophenyl Sulfone) (VZZZb)-Acid hydrolysis of VIIIa in hydrochloric acid, methanol, and N-methyl-2-pyrrolidone at 100' for 2 hr gave VIIb. Compound VIIIb was recrystallized from a mixture of N-methyl-2-pyrrolidone and water, mp 215' dec. (31); IR (mineral oil): 3490,3400,1320, and 1125 cm-'.