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DOI: 10.1055/sos-SD-027-00002

Aggarwal, V.; Richardson, J.Science of Synthesis, (20042758.

Epoxides 95 (X=O) and (arylsulfonyl)aziridines 95 (X=NR5) are three-membered cyclic electrophiles that can undergo reaction with dimethylsulfoxonium methylide (52) to afford the corresponding four-membered oxetanes 96 (X=O) and azetidines 96 (X=NR5), respectively (Scheme 50).

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