Synthesis of spirobarbiturate-pyrrolidinones <i>via</i> a domino aza-Michael/S<sub>N</sub>2 cyclization of barbiturate-derived alkenes with <i>N</i>-alkoxy α-haloamides
A highly efficient domino aza-MIRC (Michael Induced RingClosure) reaction between barbiturate-derived alkenes and N-alkoxy α-haloamides has been achieved in moderate to excellent yields. This reaction proceeds smoothly under mild conditions via a domino aza-Michael addition/intramolecular SN2 sequence, providing a practical tool in the synthesis of bioactive molecules spirobarbiturate-3-pyrrolidinones