The sulfidation of eight carboxylic and carbonic acid amides ester (4). From N- methylphthalimide (F) and 1 the dithio de-(AH) with bis (l, 5-cyclooctanediylboryl) sulfide (1) is de-rivative 5f is formed at room temperature. The carbonic acid scribed. From the aliphatic acyclic amide A and the N-substi-amides (urea derivative G, caffeine H) are sulfidated slower tuted lactams CE the corresponding thiocarbonyl com-than the carboxylic acid ...