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DOI: 10.1055/sos-SD-027-00002

Aggarwal, V.; Richardson, J.Science of Synthesis, (20042754.

Sulfur ylides react with electron-deficient alkenes (Michael acceptors) to give cyclopropanes. Dimethylsulfoxonium methylide (52) undergoes reaction with a broad variety of Michael acceptors such as α,β-unsaturated aldehydes, ketones, esters, amides, imides, and nitriles, nitroalkenes, vinyl sulfones, 5-methylenecyclopenta-1,3-dienes, and 1-methylene-1H-indenes to give the corresponding cyclopropanes.[‌3‌,‌7‌]

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