Scheme 2. Products for the reactions of the sulfonium ylide 7 with the electrophiles 1–5 (yields of isolated products after column chromatography, thermal ellipsoids drawn at 50% probability level, see ESI† for details). [a] 5 equiv., [b] 10 equiv., [c] d.r. determined after extraction, [d] d.r. determined after column chromatography.
