Active methylene compounds undergo CuI-catalyzed phenylation in DMSO: J. Org. Chem., 58, 7606 (1993). In the presence of Pd catalysts, couples with a wide range of acrylic species or allylic alcohols in the Heck reaction. For example (2-methyl-2-propen-1-ol), see: Org. Synth. Coll., 7, 361 (1990). For an extensive collection of the synthetically-useful reactions of iodoaromatics, see: Synthesis, 923 (1988).
