S. Nikas et al., THE REACTION BETWEEN PHENYLIODONIUM BIS(PHENYLSULFONYL)METHANIDE AND PYRROLIDINE, Phosphorus, sulfur and silicon and the related elements, 90(1-4), 1994, pp. 285-288
The main product from the title reaction is the enamine N-[2,2-bis(phe
nylsulfonyl)vinyl]-pyrrolidine, 4. Tetrakis(phenylsulfonyl)propane, 3,
is a by-product, when dichloromethane is used; it is formed independe
ntly from this solvent and bis(phenylsulfonyl)methane in the presence
of pyrrolidine.