Potassium thiocyanate-promoted one-pot synthesis of (1,3-diaryl-2,5- dioxoimidazolidin-4-ylidene)acetates from aryl isocyanates and alkyl propiolates short communication

摘要

The reaction of aryl isocyanates and alkyl propiolates (=alkyl prop-2-ynoates) in the presence of potassium thiocyanate (KSCN) led to geometric isomers of alkyl 2-(1,3-diaryl-2,5-dioxoimidazolidin-4-ylidene)acetates in moderate-to-good yields.