Synthesis and dynamic NMR studies of novel hydantoin and thiohydantoin derivatives. Crystal structure of diethyl 2-(4,4-diaryl-2,5-dioxoimidazolidin-1-yl) fumarate and diethyl 2-(4,4-diaryl-2-mercapto-5-oxo-4,5-dihydro-1H-imidazol-1-yl)fumarate
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Chemical Research"
DOI: 10.3184/174751917x14932244903881
Abstract: The reaction of stoichiometric amounts of dialkyl acetylenedicarboxylates with triphenylphosphine in the presence of hydantoins or thiohydantoins afforded stable crystalline phosphorus ylides. These compounds undergo smooth elimination of PPh3 to produce dialkyl 2-(4,4-diaryl-2,5-dioxoimidazolidin-1-yl)fumarate, 4 or… read more here.
Keywords: dioxoimidazolidin fumarate; diaryl dioxoimidazolidin; diaryl; diethyl diaryl ... See more keywords