Jp. Zou et al., STUDIES ON THE REACTION OF HEMIMONOTHIOAC ETALS - THE REACTION OF 1-BENZOYL-1-METHYLTHIO-METHANOL AND UREAS, Gaodeng xuexiao huaxue xuebao, 18(3), 1997, pp. 413-415
5-Phenyl-2,4-imidazolidione (4a) and 1-aryl-5-phenyl-2,4-imidazolidine
diones (4b-4g) have been synthesized by the reaction of 1-benzoyl-1-me
thylthio-methanol with urea (3a) or arylureas (3b-3g) in the slightly
acidic medium. The structures of compounds 4a-4g were confirmed by the
MS, H-1 NMR, IR spectra and elementary analysis. This reaction provid
es a new convenient method for synthesis of 1,5-disubstituted-2,4-imid
azolidinediones.