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Synthesis of 4-imidazolidinones

Recent Literature

A 5-endo trig oxidative radical cyclization of benzylamine-derived Ugi three-component reaction products rapidly affords imidazolidinones. This oxidative radical cyclization generates highly decorated privileged heterocycles.
K. Schofield, C. Foley, C. Hulme, Org. Lett., 2021, 23, 107-112.

A diastereo- and enantioselective (3 + 2) cycloaddition between 5-vinyloxazolidine-2,4-diones (VOxD) and electrophilic imines under palladium catalysis provides 4-imidazolidinones in good yields.
A. Roblin, N. Casaretto, A. Archambeau, Org. Lett., 2023, 25, 6453-6458.

A mild one-pot synthesis of highly functionalized imidazolidines and oxazolidines via SN2-type ring-opening of activated aziridines and epoxides with amines followed by p-toluenesulfonic acid catalyzed intramolecular cyclization with aldehydes tolerates a variety of functional groups and furnishes the desired products in high yields with excellent stereoselectivities.
S. Tarannum, S. Sk, S. Das, I. A. Wani, M. K. Ghorai, J. Org. Chem., 2020, 85, 367-379.