Since XI was cleanly produced from I11 and a reasonable material balance could be obtained, this reaction was investigated in more detail. Consideration of the proposed mechanism for nucleophilic cleavage of the sulfur-sulfur bond5J suggested that a reaction between VI and X in the presence of N, N-diphenylcarbamyl chloride should afford the same products obtained from cleavage of 111; however, a similar experiment involving I and ...