Abstract: The reaction of thiobenzophenone (1) with phenyllithium gives benzhydryl phenyl sulfide (4), the product of thiophilic addition. Analogous reactions occur between 1 and other organometallics and between phenyllithium and other diaryl thioketones. The formation of tetraarylethylene sulfides from diaryl thioketones and organometallics is proposed to proceed by initial thiophilic addition and this suggestion is supported by the observed ...