N-(Substitutedformyl)dialkylamino(thioxo)methanesulfenamides (R2NCSSNHCOR′, 2), anti-foggants for silver halide photographic materials as well as potential precursors for 1,4,2-dithiazolium salts, were prepared in good yields in two “one-pot” procedures. Various amide-type compounds (R′CONH2, 1) were treated successively with NaH and I2 and then condensed with dialkyldithiocarbamates (Method A); or