Disulfides, sulfenyl chlorides, thiosulfonates, and sulfensuccinimides were evaluated as electrophilic thiating agents for converting the enamine 6-dehydrodeoxynupharidine to α- thiohemiaminal derivatives of the alkaloid deoxynupharidine. Sulfensuccinimides were generally the most useful but other types of agents produced better yields in some individual cases.
